This document provides an overview of the lessons that will be covered in a course on chemicals in the natural environment. The 12 lessons will cover chemicals found in the atmosphere, hydrosphere, lithosphere and biosphere. It outlines the key concepts, objectives and activities for the first lesson which will introduce the four spheres and focus on the chemicals found in each.
Oxygen is an element with the symbol O and 8 electrons. It is essential for breathing and comes from trees. Oxygen is needed by people and animals, it is a gas, and is required for burning materials. The periodic table shows elements and their protons/electrons. The oxygen cycle connects oxygen in nature and living things.
All matter is made of tiny particles called atoms. Atoms contain protons, neutrons, and electrons. Atoms of different elements are distinguished by their number of protons. Elements can combine to form compounds, like molecules, which may have very different properties than the individual elements. While atoms are too small to see with regular microscopes, advanced microscopes have revealed that atoms are usually arranged in well-ordered arrays.
1) The document discusses the definition and origin of life. It defines life as needing energy, eliminating waste, growing, responding to the environment, reproducing, and evolving over time.
2) It explores two hypotheses for the origin of life on Earth - that it began elsewhere and arrived via meteorite, or that it began on Earth 3.5 billion years ago from chemical reactions.
3) The earliest life on Earth was prokaryotic cells, which came in two forms - bacteria and archaea. This suggests life can emerge in different environments.
1. The document discusses key concepts relating to atoms, molecules, ions, and chemical formulas. It covers Dalton's atomic theory, isotopes, relative atomic mass, ion formation, and rules for writing chemical formulas.
2. The main topics covered include the basic structure of atoms and molecules, including that atoms combine in whole number ratios to form compounds. It also addresses limitations of Dalton's theory regarding isotopes and isobars.
3. The document defines important terms like molecules, ions, valency, and molar mass and explains the relationship between mass and moles of a substance.
1. Atoms bond together through ionic or covalent bonding to form molecules. Ionic bonding involves the transfer of electrons between atoms, while covalent bonding involves the sharing of electrons.
2. Polar covalent bonding results in a molecule with slight positive and negative regions due to the unequal sharing of electrons. Hydrogen bonding, a weak attraction between polar molecules like water, is important for properties such as water's high boiling point and ability to dissolve many other substances.
3. The pH scale measures how many hydrogen ions (H+) and hydroxide ions (OH-) are present in a solution, indicating its acidity or alkalinity. Polarity allows water molecules to separate and surround ions, affecting
Carbon cycle and global concerns on environmentRajat Nainwal
Carbon is the primary building block of life and cycles through different carbon pools in the biosphere, lithosphere, hydrosphere, and atmosphere. The global carbon cycle involves fluxes of carbon between these pools through natural processes like photosynthesis, respiration, and geological processes. However, human activities like burning fossil fuels and deforestation have significantly increased carbon dioxide levels in the atmosphere, disrupting the natural carbon cycle and causing global climate change. Rising global temperatures will lead to problems like rising sea levels, food shortages, and threats to biodiversity.
The document discusses carbon cycling in ecosystems. It provides 10 understandings about carbon cycling, including that autotrophs convert carbon dioxide into organic carbon compounds, carbon dioxide diffuses into and out of organisms, methane is produced under anaerobic conditions, and fossil fuels are the product of ancient organic matter. Maintaining the carbon cycle through these processes is essential for continued availability of carbon in ecosystems.
This document provides information on chemical structures and bonding. It discusses the structure of atoms, isotopes, electron configuration, and the periodic table. It explains ion formation and two types of bonding: covalent and ionic. Examples of different compounds are given to illustrate chemical formulas and naming conventions. Dot and cross diagrams are used to represent covalent bonds. Various chemical reactions like displacement and electrolysis are also summarized.
This document discusses the sulfur cycle. It begins by defining sulfur as a yellow, odorless mineral that is essential for living organisms. It then describes the three natural ways sulfur enters the atmosphere: from sea spray, volcanic activity, and bacterial respiration. It explains that sulfur is released as hydrogen sulfide and oxidized to sulfate before returning to earth. The document also outlines the steps of the sulfur cycle and the effects of sulfur on nature and the human impact through fossil fuel combustion.
This document provides information about elements and compounds. It begins by defining pure substances as either elements or compounds. Elements contain only one type of atom, while compounds contain two or more different types of atoms bonded together. Examples of common elements and their symbols are provided, along with their locations on the periodic table. Elements are also classified as metals, nonmetals, and metalloids. Examples of important compounds like water and their chemical formulas are also given. Students are then asked to classify substances as elements or compounds and answer multiple choice questions to assess their understanding of the key concepts.
The document discusses the carbon cycle and how carbon is distributed through the biosphere, atmosphere, hydrosphere, and geosphere over different time periods in Earth's history. It analyzes the movement of carbon molecules through each sphere during the Holocene, Permian, and Devonian periods, and whether carbon was evenly distributed between spheres or became trapped in certain spheres like the geosphere. The document aims to understand how the carbon cycle has changed over geological time.
- Nonmetals have properties that are generally opposite of metals, such as being dull, brittle, and poor conductors of electricity and heat. Many nonmetals are gases at room temperature.
- Life depends on the nonmetals carbon, oxygen, and nitrogen. Carbon is essential for living organisms, oxygen is essential for breathing, and nitrogen makes up most of the air.
- Nonmetals have a wide variety of properties and are located in the green-tinted boxes on the periodic table, especially in Groups 14-18. They generally gain, lose, or share electrons when reacting with other elements.
This document provides information about a module on chemical nomenclature. It begins with an introduction that names are used to identify and distinguish between people and compounds. It then outlines the lessons contained in the module, which are on chemical symbols, formulas, empirical formulas, molecular formulas, and nomenclature. The document concludes by explaining how students should approach learning from the module, including taking pre- and post-tests.
- Nonmetals have properties that are opposite of metals such as being dull, brittle, and poor conductors of electricity and heat.
- Many nonmetals such as oxygen, carbon, and nitrogen are essential for life on Earth and make up living organisms and the air.
- Nonmetals have a wide variety of properties and are found throughout the periodic table, especially in the lower left green boxes.
This document defines and provides examples of atoms, elements, molecules, and compounds. It states that atoms are the basic unit of a chemical element and are made up of protons, neutrons, and electrons. An element is made of only one type of atom, while a molecule forms when two or more atoms bond together, whether of the same or different elements. A compound contains at least two different elements bonded together. It provides examples like water (H2O) as both a molecule and compound since it contains hydrogen and oxygen atoms bonded together.
This document discusses stable isotope deltas, which are tiny yet robust signatures that can be measured in nature. It explains that two fundamental processes, isotopic fractionation and isotope mixing, are responsible for most stable isotope variations seen in terrestrial systems. Isotopic fractionation occurs through equilibrium or kinetic processes that fractionate isotopes due to small differences in their physical or chemical properties. Isotope mixing models can provide information about processes like 14C abundances in the atmosphere and past ocean isotopic compositions. The document also proposes a new unit called the "urey" to describe isotope deltas in a way that overcomes limitations of traditional units.
The document discusses how humans have altered the global carbon cycle through burning fossil fuels, deforestation, and burning trees. Burning fossil fuels increases the rate of carbon moving from rocks to the atmosphere. Deforestation and burning trees decreases the rate of carbon moving from the atmosphere to living organisms. This has increased the level of carbon dioxide in the atmosphere, which is a greenhouse gas that absorbs and reradiates infrared radiation, contributing to global climate change. The Mauna Loa curve shows increasing carbon dioxide levels in the atmosphere since the 1950s.
BIOTRANSFORMATION OF MANGANESE_Biogenic Metals in Water Treatment and Managem...zurielle16
This document summarizes biotransformation of manganese by microorganisms and the influence of manganese oxide on scavenging trace elements. It discusses that manganese exists in multiple oxidation states that are biologically significant, and microbes can enzymatically oxidize soluble Mn(II) to insoluble Mn(III) and Mn(IV) oxides much faster than abiotic chemical oxidation. These biogenic manganese oxides have amorphous structures with large surface areas that allow them to strongly adsorb various contaminants like arsenic and selenium. The document reviews several manganese-oxidizing bacteria like Pseudomonas putida and Bacillus sp. that produce stable manganese oxide precipitates, demonstrating the potential for micro
This document discusses atoms, molecules, ions, and chemical formulas. It begins by explaining early theories of matter being made of elements like fire, air, water and earth. John Dalton later proposed his atomic theory, which stated that all matter is made of tiny indivisible particles called atoms. The document then discusses molecules, which are combinations of two or more atoms, and ions, which are atoms or groups of atoms with a net electric charge. It concludes by explaining how chemical formulas represent the composition of molecules and compounds in terms of the symbols of their constituent elements.
The document discusses the astronomical origins of life and how the basic chemical elements necessary for life were created in stars before being incorporated into planets like Earth. It outlines how carbon, hydrogen, oxygen, and nitrogen came together on Earth to form the first living organisms around 4 billion years ago. The document also explores extremophile microorganisms that can survive in extreme environments and how their ability to inhabit harsh conditions contributes to our understanding of possible life in other parts of the solar system like Mars or Europa.
This document outlines a 12-lesson course on air quality and atmospheric pollution. It provides objectives and activities for each lesson, including understanding the composition of air, main pollutants, measuring air quality, how pollutants are formed and affect health, and technologies to improve air quality. Lesson 1 focuses on the composition and importance of gases in the atmosphere. Future lessons will cover defining and measuring major pollutants, how air quality varies by location, and governmental efforts to enhance air quality.
1. Biogeochemistry is the study of the cycles of chemical elements like carbon and nitrogen through biological and geological systems over space and time. Key cycles include the carbon, nitrogen, phosphorus, and sulfur cycles.
2. These biogeochemical cycles involve the movement of elements between living and non-living components of the Earth system, including the atmosphere, lithosphere, hydrosphere, and biosphere.
3. Microbes play an important role in transforming elements between their various chemical forms and facilitating their movement between different Earth reservoirs as part of these global element cycles.
The document provides a lesson on the key characteristics of Earth that sustain life. It includes 10 multiple choice questions that test understanding of these characteristics. The questions cover topics like the importance of Earth's position in the Goldilocks zone, its hydrosphere, atmosphere, and subsystems like the lithosphere and biosphere. The document emphasizes that certain properties must be just right for life, including Earth's temperature, liquid water, atmospheric composition, distance from the sun, and presence of a magnetic field and plate tectonics. These optimal conditions are why Earth is uniquely habitable within the solar system.
This document provides a lesson on the key characteristics of Earth that sustain life. It includes 10 multiple choice questions about these characteristics, such as the importance of the hydrosphere, composition of the atmosphere, and role of the ozone layer. It also discusses how Earth's temperature, presence of liquid water, atmospheric composition, distance from the Sun, energy source, magnetic field, nutrients, greenhouse gases, and tectonic plates create conditions suitable for life. The document emphasizes that precise combinations of these factors make Earth uniquely habitable in the universe.
The document summarizes the history of life on Earth from its beginnings around 4 billion years ago to the present. It describes how life first emerged on Earth through natural chemical and physical processes, with the earliest life forms being microspheres composed of amino acids and RNA. These eventually developed into the first prokaryotic cells through self-replication of their RNA. Further evolution led to eukaryotic cells through endosymbiosis, and complex multicellular organisms developed over time, with major diversifications and several mass extinction events altering life on the planet.
Greenhouse Effect, Carbon Cycle & Rising TemperaturesSD Paul
The document discusses the greenhouse effect, carbon cycle, and rising global temperatures. It notes that scientists have debated whether temperature rise is natural or human-caused. The 2007 IPCC report concluded global warming is very likely due to human activities like fossil fuel use that emit greenhouse gases like carbon dioxide, disrupting the natural carbon cycle. The greenhouse effect occurs as certain gases trap infrared radiation emitted from the Earth's surface, and rising CO2 levels from activities such as deforestation and burning fossil fuels are enhancing the greenhouse effect.
The document discusses the carbon cycle, which involves carbon continually moving through living organisms, oceans, atmosphere, and rocks. There are four main subcycles - the rock subcycle over millions of years, ocean subcycle over hundreds of years, biological subcycle over days to years, and fossil fuel subcycle over millions of years being released in recent decades. Carbon is essential for life and plays a key role in climate as a greenhouse gas.
The document discusses the carbon cycle, which involves the movement of carbon between different reservoirs on Earth, including the atmosphere, oceans, biosphere, and lithosphere. Carbon cycles through these reservoirs through various processes on timescales ranging from years to millions of years. Key aspects of the carbon cycle include photosynthesis, respiration, decomposition, weathering of rocks, deep ocean storage, and the formation and combustion of fossil fuels.
The document summarizes the carbon cycle, which is the movement of carbon between different reservoirs on Earth and in its atmosphere. Carbon continually cycles between living organisms, oceans, atmosphere, and rocks through various processes over timescales ranging from years to millions of years. Key parts of the cycle include photosynthesis fixing carbon from the atmosphere into organisms, respiration and decomposition releasing carbon back to the air, and geological processes like weathering sequestering carbon in rocks over millions of years.
Carbon and oxygen are two of the most abundant elements on Earth. Carbon is found in all living things and is the basis of organic molecules. It cycles continuously between the atmosphere, living things, oceans, and geologic reservoirs. Oxygen is produced through photosynthesis and is essential for cellular respiration. It cycles between the atmosphere, biosphere, and lithosphere through natural processes. Disruptions to these elemental cycles can impact climate and ecosystems.
Geochemistry involves studying the chemical composition of Earth and other planets, as well as the chemical processes that govern rocks, water, and soils. It examines how chemical elements are distributed and move through different parts of Earth over time. Key techniques for geochemical analysis include electron probe microanalysis and X-ray fluorescence spectrometry. Proper interpretation of geochemical data requires considering analytical uncertainty and discussing limitations with laboratory experts.
The Oxygen Bottleneck for TechnospheresSérgio Sacani
This document discusses the role of atmospheric oxygen in enabling the development of advanced technology on exoplanets. It argues that a minimum oxygen concentration of around 18% is required for sustainable combustion, which played a key role in processes like metallurgy that were essential for early civilizations on Earth. Periods when Earth's atmospheric oxygen dropped below this level would have inhibited the development of technology. Therefore, only planets capable of maintaining significant atmospheric oxygen over long timescales may be able to develop detectable technospheres. While complex life can evolve in low-oxygen environments, the emergence of advanced technology depends more strictly on the availability of oxygen at high concentrations through combustion.
This document summarizes key topics related to global warming, including:
1) It explains the greenhouse effect and identifies the most important greenhouse gases as water vapor, carbon dioxide, and methane.
2) It discusses several likely contributors to the origin of Earth's oceans, including outgassing from the cooling primordial Earth and impacts from comets during the late heavy bombardment period.
3) It describes the carbon dioxide cycle, noting how carbonate minerals and ocean dissolution help regulate Earth's temperature over long timescales.
4) It explains that oxygen in the atmosphere is largely derived from photosynthesis over billions of years and helps protect life by absorbing ultraviolet radiation.
This document contains a table of contents for a chemistry textbook that covers 8 topics related to chemistry. The table of contents lists the learning outcomes, introduction and activities for Topic 1 which is about the composition of air and the importance of oxygen. It describes the main gases that make up air, including nitrogen, oxygen and carbon dioxide. Experiments are presented to test the solubility of oxygen and carbon dioxide in water and their reactions with sodium hydroxide. The importance of oxygen for respiration is also discussed.
The ostrich is the largest living bird. It is native to Africa and can run up to 65 km/h. Ostriches live in groups of 5-50 birds and mainly eat seeds, plants, and insects. When threatened, they will either fight by pecking or kicking or flee at high speeds.
This document provides an overview of algae and its importance for Earth's atmosphere. It discusses how algae and oxygenic photosynthesis transformed the early Earth's atmosphere from one dominated by carbon dioxide and lacking oxygen to the oxygen-rich atmosphere we have today. The rise of oxygen-producing algae led to the evolution of aerobic life on Earth. Modern algae play an important role in atmospheric carbon dioxide levels and protecting the atmosphere from water loss to space.
ALGAE.ppt bsc botany Algae is an informal term for a large and diverse group ...MANISHPARIDA1
This document provides an overview of algae and its importance for Earth's atmosphere. It discusses how algae and oxygenic photosynthesis transformed the early Earth's atmosphere from one dominated by carbon dioxide and lacking oxygen to the oxygen-rich atmosphere of today. The rise of oxygen-producing algae led to the evolution of aerobic life on Earth. Modern algae play an important role in atmospheric carbon dioxide levels and protecting the atmosphere from water loss to space.
ALGAE evolution and the importance of algaeMalayShah55
This document provides an overview of algae and its importance for Earth's atmosphere. It discusses how algae evolved oxygenic photosynthesis over 3 billion years ago which introduced oxygen into the atmosphere. It also describes how algae have played a key role in regulating carbon dioxide and oxygen levels in the atmosphere over time, influencing the evolution of life on Earth. The document outlines the major groups of algae and provides examples of important algae types, their structures, and impacts like red tides.
The document provides an overview of lessons covering physics topics related to astronomy. It outlines 24 lessons that will cover telescopes, lenses, different types of telescopes, stars, the sun, moon and earth, eclipses, star distances, galaxies, and more. Each lesson includes objectives, literacy and numeracy focuses, and extension questions.
The document outlines a physics lesson plan covering topics related to telescopes, stars, galaxies, and the structure and composition of stars over 24 lessons. Key topics included refracting and reflecting telescopes, star distances and brightness, galaxies, stellar composition and nuclear fusion, and how a star's color relates to its surface temperature.
This document outlines a physics lesson plan on telescopes over 24 lessons. It will cover the different types of telescopes like refracting, reflecting, and radio telescopes. It will discuss how telescopes produce images using electromagnetic radiation of different frequencies. Key topics include lenses, star distances, galaxies, and the composition of stars. Lessons will include activities, literacy and numeracy focus, and questions for extension.
The document outlines a physics course covering topics related to astronomy and the structure of atoms and stars over 24 lessons. It provides learning objectives and activities for each lesson, including lessons on telescopes, the sun and planets, star distances and temperatures, galaxies, and the structure and behavior of atoms and gases.
This document provides an overview of the lessons that will be covered in a module about radiation and waves. It focuses on lesson P6.7, which discusses electromagnetic waves with frequencies higher than visible light, including ultraviolet (UV) rays, X-rays, and gamma rays. The lesson objectives are to understand that these waves are ionizing radiation that can alter or damage living cells. Examples of sources, detectors, and uses of each type of wave are provided. Key concepts explained are that frequency increases and wavelength decreases as you move from radio waves to gamma rays in the electromagnetic spectrum.
This document provides an overview of 12 lessons on the wave model of radiation. It will cover topics such as what waves are, describing wave properties, how waves behave at barriers and boundaries, bending light beams, electromagnetic waves, radio waves, and radiation from space. The first lesson defines key terms like amplitude, wavelength, and frequency and explains the two main types of waves - transverse and longitudinal waves. Subsequent lessons will focus on reflection, refraction, diffraction, and interference of waves.
The document outlines a route map for a 12 lesson course on electric circuits. It will cover topics like static electricity, electric charge, circuits, current, resistance, resistors, voltage, power, and electricity generation and distribution. It provides learning objectives and a sample activity for the first lesson which involves drawing a series circuit with batteries, a switch, light bulb, resistor and variable resistor and adding a voltmeter and ammeter.
This document provides an overview of the topics that will be covered in 12 lessons on electric circuits. The lessons will cover static electricity, electric charge, circuit symbols, simple circuits, controlling and measuring current, resistance, resistor combinations, measuring voltage, electrical power, domestic appliances, generating electricity, and distributing electricity. Each lesson will have objectives, activities, extension questions, and a summary.
This document provides an overview of the key concepts and lessons covered in a physics module on forces and motion. Over 12 lessons, students will learn about forces in different directions, how objects start and stop moving, friction, reaction forces, speed, modeling motion, force interactions, momentum, changes in momentum, car safety, laws of motion, work and energy, and kinetic and gravitational potential energy. Example questions and activities are provided to help students understand concepts like momentum, changes in momentum due to forces, and how safety features in cars like seatbelts reduce impact forces during collisions.
The document outlines a 12 lesson plan on the topic of forces and motion. It will cover key concepts such as forces in different directions, how objects start to move, friction, reaction of surfaces, speed, modeling motion, force interactions, changes in momentum, car safety, and laws of motion. Each lesson will include objectives, activities, literacy and numeracy focuses, and questions to help students understand the key topics being covered.
1. The document outlines a route map for a chemistry module covering topics like alkanes, alcohols, carboxylic acids, and energy changes over 24 lessons.
2. Lesson C7.9 focuses on rates of reaction and how factors like temperature, concentration, and particle size can influence the rate. Collision theory and activation energy are also discussed.
3. Examples of reversible reactions are given where the direction can change based on conditions like temperature and pressure. Equilibrium is reached when the rates of the forward and reverse reactions are equal and concentrations no longer change.
This document outlines a chemistry lesson plan covering titrations. The lesson will teach students how titration is used as a quantitative technique to measure the concentrations of acids and bases by determining the volume needed of a standard solution to reach the endpoint of a neutralization reaction. Key concepts include using an indicator to identify the endpoint, repeating titrations to obtain an accurate average volume, and how titrations can be used to find the concentration of an unknown solution based on the reaction stoichiometry. The lesson will also discuss using data loggers and pH probes for higher precision measurements.
The document outlines a chemistry route map for studying various topics over 24 lessons, including alkanes, alcohols, carboxylic acids, esters, fats and oils, energy changes, chromatography, titrations, reaction rates, equilibrium, the chemical industry, and green chemistry. It provides lesson objectives, activities, and questions for lessons on alkanes, alcohols, and carboxylic acids, covering topics like their structures, properties, reactions, uses, and how they are produced.
This document outlines a route map for a chemistry module covering topics like alkanes, alcohols, carboxylic acids, esters, fats and oils, energy changes, chromatography, gas chromatography, titrations, rates of reaction, equilibrium, the chemical industry, green chemistry, industrial chemistry, theories on acidity, sampling, and making ethanoic acid. The module will focus on improving yield in industrial chemistry and reducing waste and pollution.
This document provides an overview of a 12-lesson chemistry module that will cover various topics related to chemical synthesis, including the chemical industry, acids and alkalis, rates of reactions, and factors that affect rates. It focuses specifically on lesson 6.11, which discusses the different stages involved in chemical synthesis, and lesson 6.12, which is about measuring the yield of chemical reactions.
The document provides an overview of a 12-lesson course on chemical synthesis that covers topics such as the chemical industry, acids and alkalis, reactions of acids, salts, purity of chemicals, rates of reactions, catalysts, chemical quantities, stages of chemical synthesis, and measuring yield. The first lesson focuses on understanding the role and importance of the chemical industry and the difference between bulk and fine chemicals.
1. Ionic compounds form when a metal reacts with a non-metal, resulting in positively charged metal ions and negatively charged non-metal ions that bond together in a crystalline lattice structure.
2. When ionic compounds dissolve in water or melt, the ions become free to move and conduct electricity. During electrolysis, positively charged metal ions move to the cathode and negatively charged non-metal ions move to the anode.
3. Common ionic compounds include sodium chloride, formed from sodium and chlorine ions, and copper chloride, used in electrolysis to extract copper metal from its ionic form.
The document provides an overview of a 12-lesson chemistry course covering topics like the periodic table, alkaline metals, chemical equations, halogens, helium, atomic structure, electrons, salts, and ionic theory. It includes lesson objectives, activities, extension questions, and summaries for the first two lessons which focus on the periodic table and alkaline metals. Key points covered are the periodic table's arrangement of elements, properties of group 1 alkaline metals like their reactions with water and acids, and their similarities and reactivity trends.
This document outlines a biology curriculum covering various topics over 12 lessons. It will cover photosynthesis, respiration, feeding relationships, genetics, blood, circulation, energy, symbiosis, parasites, disease, biotechnology, exercise, joints, genetic modification, and more. Key concepts include how plants and organisms obtain and use energy, genetic inheritance and testing, the structure and function of body systems, and applications of biotechnology.
Genetic testing uses gene probes to identify inherited disorders in embryos or fetuses. It was developed in the 1980s and can detect conditions like cystic fibrosis, sickle cell anemia, and Down syndrome. A gene probe is a piece of DNA that binds to a faulty gene, identifying disorders. Parents may choose to terminate a pregnancy if testing finds an inherited disease.
The Jewish Trinity : Sabbath,Shekinah and Sanctuary 4.pdfJackieSparrow3
we may assume that God created the cosmos to be his great temple, in which he rested after his creative work. Nevertheless, his special revelatory presence did not fill the entire earth yet, since it was his intention that his human vice-regent, whom he installed in the garden sanctuary, would extend worldwide the boundaries of that sanctuary and of God’s presence. Adam, of course, disobeyed this mandate, so that humanity no longer enjoyed God’s presence in the little localized garden. Consequently, the entire earth became infected with sin and idolatry in a way it had not been previously before the fall, while yet in its still imperfect newly created state. Therefore, the various expressions about God being unable to inhabit earthly structures are best understood, at least in part, by realizing that the old order and sanctuary have been tainted with sin and must be cleansed and recreated before God’s Shekinah presence, formerly limited to heaven and the holy of holies, can dwell universally throughout creation
How to Install Theme in the Odoo 17 ERPCeline George
With Odoo, we can select from a wide selection of attractive themes. Many excellent ones are free to use, while some require payment. Putting an Odoo theme in the Odoo module directory on our server, downloading the theme, and then installing it is a simple process.
Beyond the Advance Presentation for By the Book 9John Rodzvilla
In June 2020, L.L. McKinney, a Black author of young adult novels, began the #publishingpaidme hashtag to create a discussion on how the publishing industry treats Black authors: “what they’re paid. What the marketing is. How the books are treated. How one Black book not reaching its parameters casts a shadow on all Black books and all Black authors, and that’s not the same for our white counterparts.” (Grady 2020) McKinney’s call resulted in an online discussion across 65,000 tweets between authors of all races and the creation of a Google spreadsheet that collected information on over 2,000 titles.
While the conversation was originally meant to discuss the ethical value of book publishing, it became an economic assessment by authors of how publishers treated authors of color and women authors without a full analysis of the data collected. This paper would present the data collected from relevant tweets and the Google database to show not only the range of advances among participating authors split out by their race, gender, sexual orientation and the genre of their work, but also the publishers’ treatment of their titles in terms of deal announcements and pre-pub attention in industry publications. The paper is based on a multi-year project of cleaning and evaluating the collected data to assess what it reveals about the habits and strategies of American publishers in acquiring and promoting titles from a diverse group of authors across the literary, non-fiction, children’s, mystery, romance, and SFF genres.
Still I Rise by Maya Angelou
-Table of Contents
● Questions to be Addressed
● Introduction
● About the Author
● Analysis
● Key Literary Devices Used in the Poem
1. Simile
2. Metaphor
3. Repetition
4. Rhetorical Question
5. Structure and Form
6. Imagery
7. Symbolism
● Conclusion
● References
-Questions to be Addressed
1. How does the meaning of the poem evolve as we progress through each stanza?
2. How do similes and metaphors enhance the imagery in "Still I Rise"?
3. What effect does the repetition of certain phrases have on the overall tone of the poem?
4. How does Maya Angelou use symbolism to convey her message of resilience and empowerment?
Views in Odoo - Advanced Views - Pivot View in Odoo 17Celine George
In Odoo, the pivot view is a graphical representation of data that allows users to analyze and summarize large datasets quickly. It's a powerful tool for generating insights from your business data.
The pivot view in Odoo is a valuable tool for analyzing and summarizing large datasets, helping you gain insights into your business operations.
Slide Presentation from a Doctoral Virtual Open House presented on June 30, 2024 by staff and faculty of Capitol Technology University
Covers degrees offered, program details, tuition, financial aid and the application process.
Webinar Innovative assessments for SOcial Emotional SkillsEduSkills OECD
Presentations by Adriano Linzarini and Daniel Catarino da Silva of the OECD Rethinking Assessment of Social and Emotional Skills project from the OECD webinar "Innovations in measuring social and emotional skills and what AI will bring next" on 5 July 2024
Join educators from the US and worldwide at this year’s conference, themed “Strategies for Proficiency & Acquisition,” to learn from top experts in world language teaching.
1. C5 Chemicals of the Natural Environment Route map Over the next 12 lessons you will study : Friday 21 October 2011 C1.1 Chemicals in four spheres C1.2 Chemicals of the atmosphere C1.3 Chemicals of the hydrosphere C1.4 Chemicals of the lithosphere End of module test C1.5 Silicates of the lithosphere C1.6 Chemicals of the biosphere C1.7 Human Impacts on the environment C1.8 Metals from the lithosphere C1.9 Metals from the lithosphere (Part 2) C1.10 Metals from the lithosphere (Part 3) C1.11 Structure and bonding in metals C1.12 The life cycle of metals
2. C5.1 Chemicals in four spheres Decide whether the following statements are true or false: Lesson objectives: Understand and know the naturally occurring elements and compounds. Understand about the differnet abundance of elements in different spheres. Understand how elements cycle between the spheres We will focus on. Friday 21 October 2011 First activity: Draw a diagram of the Earth and try and remember the different layers that the Earth is made of. Label the diagram and try and predict where you would find the following things: - a) Plant life b) Minerals and metal ores c) oxygen d) gold ? Literacy: Elements, compounds, crust, Earth, Lithosphere, atmosphere, hydrosphere, biosphere, crust, mantle and core Numeracy: The elements of the four spheres appear in different amounts. The most abundant element in the lithosphere is oxygen at 49% and in the hydrosphere the most common element is hydrogen at 50% PLTS Independent enquirers Creative thinkers Reflective learners We will focus on being an independent enquirer and use information in graphs to find information Team workers Effective participators Self managers
3. Extension questions: 1: Name one thing from each sphere that you use every day (lithosphere, hydrosphere, atmosphere and biosphere) ? 2: What are the three most common elements in the hydrosphere ? 3: Which two spheres are involved in photosynthesis ? 4: Water is found mainly in the hydrosphere but where would it be found in the other three spheres ? 5: Where sphere to we extract rock ore like iron ore ? Know this: a: Know that oxygen is the most abundant element in the lithosphere but not in the atmosphere. b: Know that the elements are moving between the spheres all the time, being constantly reused and recycled. Friday 21 October 2011 Introduction: The Earth can be split into many spheres that surround it. The Lithosphere is made up by the mantle and the crust. The hydrosphere is the seas and oceans that sit upon the crust. The atmosphere is the gaseous layer than surrounds the Earth and keeps it warm and protected from electromagnetic radiation. The biosphere is all the living things that can live within the other spheres. These spheres are constantly interacting with each other and molecules and elements are moving between them. C5.1 Chemicals in four spheres
4. C5.1 a Look at the photograph and information and answer all the questions: Which part of the Earth’s crust is mineral rich and supports plant life ? What happens to the age of rocks as you travel from the surface of the crust to the crust upper mantle boundary? The lithosphere which is up to 100 km thick, includes the continental crust. This is the relatively cool and rigid part of the Earth’s structure. The Asthenosphere is the middle part of the mantle and has a consistency of hot plastic. The Mesosphere is the bottom part of the mantle, is higher in temperature than the lithosphere and is more rigid due to an increase in pressure. What supports life is the very top of the crust and its soil. The Earth’s crust The hydrosphere does not cover the whole of the Earth’s surface. Do you think it is still right to call it a sphere ? Explain ! Key concepts
5. Key concepts Look at the photograph and information and answer all the questions: Although aluminium is more abundant than iron which is used to make steel and stainless steel, aluminium is more expensive…explain why ? The wet mass of an average human is 70 kg, the dry mass (after cremation) is about 600 grams.. what's missing ? The abundance of elements in the four sphere changes. In the lithosphere, the most abundant element is oxygen lock in compounds like silicon dioxide and other oxides. In animal flesh (including humans) the most abundant element is also oxygen. This is largely in the form of water. Carbon is the second most abundant element in animals as it forms the backbone of large biological molecules like proteins, lipids and carbohydrates. C5.1 b Key elements found in the lithosphere and human tissue
6. Key concepts Look at the photograph and information and answer all the questions: Chemicals like carbon dioxide (CO 2 ) and water (H 2 O) do not always stay in one of the four sphere. The are able to move between spheres. Think of water in liquid in the rivers and seas as part of the hydrosphere. When water evaporates it is now part of the atmosphere. Found in the biomass of plants and animals it becomes part of the biosphere. Explain how a) carbon in the form of CO2 us removed form he atmosphere into the cells of plants ? What drives the water cycle across the globe ? Give three other elements or compounds that flow between different speheres ? C5.1 c CO 2 (g) H 2 O (g) H 2 O (l) Molecules flowing in and out of spheres C (s)
7. Plenary Lesson summary: lithosphere atmosphere hydrosphere biosphere Friday 21 October 2011 The lithosphere, hydrosphere and atmosphere are the source of all our raw materials like metal ores used to extract metal, soil nutrients to support plant growth, the air that we breathe, oil reserves to make plastic fuels lubricants and dyes and gold and other precious mineral deposits. How Science Works: Research into the Earth’s atmosphere including the composition of different gases in atmosphere. Look at how we are changing the composition of our atmosphere by burning fossil fuels. Preparing for the next lesson: The Earth is made of many spheres. The ________ is made of rock and contains many metals. The ________ is made up of oceans and seas but doesn’t quite cover the Earth. All life makes up the _____________. The Earth is surrounded by the _________ which keeps the planet warm C5.1 Decide whether the following statements are true or false : False True 3: Most biological compounds are based on the element silicon ? False True 2: The Earths core is split into an inner and outer section ? False True 1: Nitrogen is the most common element found in the atmosphere ?
8. Chemicals of the atmosphere Decide whether the following statements are true or false: Lesson objectives: Understand the composition of different gases in our atmosphere Understand the type of molecules that these gases are, their bonding and their attraction to one another We will focus on. Friday 21 October 2011 First activity: Draw the gas compounds and elements that make up atmospheric air. Label them to show which are atoms, which are elements and which are compounds ? Literacy: Atmosphere, carbon dioxide, oxygen, ozone, water, hydrogen, nitrogen, noble gases, Small molecules, attractive forces, molecular models, electrostatic attraction and covalent bonding. Numeracy: The most abundant gas is nitrogen and for every 1000 gas particles nitrogen would be almost 780 of them. Oxygen is the second most abundant gas at just over 21% of the atmosphere. Before plants the atmosphere contained no oxygen. PLTS Independent enquirers Creative thinkers Reflective learners We will focus on being self managers by evaluating your own work and managing your own behaviour. Team workers Effective participators Self managers C5.2
9. Chemicals of the atmosphere Extension questions: 1: If you had 100 litres of atmospheric air, estimate the volume of a) nitrogen b) oxygen and c) argon ? 2: If you compared the water content of air collected in a desert and air collect in a tropical jungle how would it differ ? 3: Hydrogen and Chlorine have 1 and 7 electrons respectively in their outer shell. How many covalent bonds can they form ? 4: Draw a diagram showing the covalent bonding in HCl and CH 4 5: Which species uses carbon dioxide ? Know this: a: Know the composition of gases in our atmosphere. b: Know the nature of the bonding and attraction in and between gas molecules found in our atmosphere. Friday 21 October 2011 Introduction: Due to the Earths gravity, the gases in our atmosphere are kept just above the Earths crust. The composition of these gases is 78% nitrogen, 21% oxygen, 1% argon and 0.03% carbon dioxide. Between this mixture of gaseous compounds and elements are very weak forces of attraction. They are not very strong though and the molecules do not ‘stick’ together for very long. Between atoms in the same compounds are covalent bonds that hold individual atoms together (e.g. CO 2 O 2 H 2 O) To break these bonds require lots of energy because they share electrons and the attraction of the electrons to the nucleus is very large. C5.2
10. Look at the photograph and information and answer all the questions: Our atmosphere can sustain life at a height of about 10 km above sea level. It is a mixture of billions of tonnes of different gases. Our atmosphere insulates us and protect us against UV radiation. The present composition of the atmosphere is 78% nitrogen, 20% oxygen, and 1% other gases including carbon dioxide and the Noble gases (Neon, Argon, Krypton & Xenon). Which gas do we exchange in our lungs and use to respire glucose producing water and carbon dioxide ? Describe how water content would change in a sample of air taken form a tropical rain forest and a desert in the sub Sahara ? Are we adding or removing carbon dioxide to our atmosphere by burning fossil fuels like petrol and diesel ? key concepts Oxygen (O 2 ) Nitrogen (N 2 ) Water (H 2 O) Ozone (O 3 ) dioxide (CO 2 ) Carbon Gases found in the atmosphere C5.2 a
11. Look at the photograph and information and answer all the questions: Emissions form car exhausts contain toxic gases. These gases are breathed in and transported to all the body's major organs. These pollutants include, carbon monoxide, carbon dioxide, nitrogen monoxide, nitrogen dioxide, dinitrogen oxide, sulphur dioxide, low level ozone, and particulates. The most obvious health impact of car emissions is on the respiratory system. Both nitrogen monoxide (NO) and nitrogen dioxide (NO 2 ) are toxic even at low levels causing lung damage and higher blood pressure...explain what effects these gases may have on a) an asthma sufferer and b) some with cardiovascular problems ? Explain why regular vehicle emission testing helps maintain good air quality in cities across the country ? What effect will sulphur dioxide (SO 2 ) have on the environment ? key concepts Ozone (O 3 ) low level Sulphur dioxide (SO 2 ) Nitrogen monoxide (NO) Nitrogen dioxide (NO 2 ) Dinitrogen oxide (N 2 O) dioxide (CO 2 ) Carbon monoxide (CO) Carbon Particulates C5.2 b
12. Key concepts Look at the photograph and information and answer all the questions: Draw (just like CO2) a ball and stick model of a) H2 b) H2O and c) N2 ? The atoms in any molecule picture above (CO 2 , O 2 , H 2 , N 2 and H 2 ) are held together by electrostatic attraction between two nucleis and a shared pair of electrons. This is a single covalent bond. This type of bond is strong and the word covalent means co ‘together’ and valent ‘strength. The number of covalent bond an element can make depends on the number of electrons. Carbon can form four single bonds for example. Carbon dioxide Oxygen Covalent molecules found in air Nitrogen Hydrogen Water C5.2 c carbon dioxide In the carbon dioxide molecule, the carbon forms two bonds with each oxygen atom. These double bonds between carbon and oxygen do you think they are stronger or weaker than single covalent bonds ?
13. Plenary Lesson summary: Oxygen covalent weak mixture Friday 21 October 2011 The term "covalence" in regard to bonding was first used in 1919 by Irving Langmuir in a Journal of the American Chemical Society article entitled "The Arrangement of Electrons in Atoms and Molecules". Walter Heitler and Fritz London are credited with the first successful quantum mechanical explanation of a chemical bond, specifically that of molecular hydrogen, in 1927. How Science Works: Find out what is meant by the term salt. It isn’t just the stuff you put on your chips! Preparing for the next lesson: The atmosphere is a ________ of gases such as hydrogen and _________. Between these gases there are _________ attractive forces that aren’t strong enough to hold them together. Between atoms though are ________ bonds which are much stronger. C5.2 Decide whether the following statements are true or false : False True 3: Carbon dioxide contains two double bonds. False True 2: The atmosphere is held in place by the ozone layer False True 1: Covalent bonds take place between metal atoms
14. Decide whether the following statements are true or false: Lesson objectives: Understand the formula and the unusual properties of water. Understand and be able to illustrate the bonding within and between water molecules Understand why water ius a good solvent and to how ions form in solution We will focus on. Friday 21 October 2011 First activity: Write a list of things that you know dissolve in water and things that do not dissolve in water. Literacy: Water, H 2 O, solvent, solute, solution, dissolve, salts, freezing, melting, boiling, condensing, water cycle, weathering, transportation, deposition and hydrosphere Numeracy: It has been predicted that there are 44000000000000000000000000000000000000000000000 molecules of water in our oceans. In just 18 grams of water there are a staggering 6.02 x 10 23 molecules. PLTS Independent enquirers Creative thinkers Reflective learners We will focus on effective participators as everyone needs to contribute in order for the best learning to take place. Team workers Effective participators Self managers Chemicals in the hydrosphere C5.3
15. Extension questions: 1: Show the three states of water and what is the melting and boiling points of water ? 2: Draw a table to show properties of water that are common with other molecules in one column and another of unusual properties ? 3: Draw a diagram to show how the water cycle has caused the sea to become salty ? 4: Does pure water conduct electricity ? Why or why not ? 5: Explain why for life to exist the presence of water is essential ? Know this: a: Know that water has the formula H 2 O is a covalent molecule and is called the universal solvent. b: Known that rivers are slightly salty as they carry dissolved salts down into the seas and ocean where they have accumulated over time. Friday 21 October 2011 Introduction: Water with the formula H 2 O is one of the most important chemicals on the Earth. This is because of it’s very unique properties. Normally when a liquid solidifies it contracts but water actually expands to make ice. The molecules are also dipolar meaning they have a negative charge at one end and a positive charge at another. This means that they can separate ionic compounds (and are therefore good at dissolving them). When rain lands on the lithosphere, ionic compounds are then dissolved and carried by rivers out to sea. Over millions of years this has made the seas and oceans salty. Chemicals in the hydrosphere C5.3
16. Look at the photograph and information and answer all the questions: Gases, liquids and solids are all made up of particles, but the behaviours of these particles differ in the three phases. Particles in a gas are well separated with no regular arrangement moving freely at high speeds, in a liquid particles are close together with no regular arrangement sliding about one another and in a solid particles are tightly packed, usually in a regular pattern vibrating around a fixed point. Explain what happens when a) ice melts and b) water freezes 9think about the water molecules and density? On Earth water exits mostly in the liquid state, where would you find water in the a) solid and b) gaseous state ? Give three ways water has shaped the lithosphere, for example glacier ice eroding huge valleys over time? Solid Liquid Gas a b c d a melting b freezing c evaporation d condensation Sates of matter C5.3 a Key concepts
17. Key concepts Look at the photograph and information and answer all the questions: Water is a very important biological solvent without which life would not exist: Water is composed of two hydrogen atoms and one oxygen atom and has the formula H 2 O. Water itself is a polar solvent because it has charged areas. Oxygen has a slight negative charge and the hydrogen atoms have a slight positive charge. What is the % of water in a hydrated human body and what hormone controls the amount of water excreted via the kidneys What are the melting and boiling points of water and what happens to water molecules as they change state from liquid to gas ? Explain in two to three sentences why life cannot exist without the presence of water ? C5.3 b
18. Key concepts C5.3 c Look at the photograph and information and answer all the questions: The positively charged hydrogen atoms are attracted to the negatively charged oxygen atom of a nearby water molecule. This lining up of the O-H atoms is called hydrogen bonding. These forces of attraction are relatively strong and determine the higher than expected melting and boiling points of H 2 O. The polar nature of the water molecule also solvate ions like sodium (Na + ) and chloride (Cl - ) Looking at the diagram above left, explain how water molecules solvate or dissolve the sodium ion ? Looking at the diagram above right, explain how water molecules solvate or dissolve the chloride ion ? Water as a polar solvent Na + Cl -
19. Plenary Lesson summary: salts charge weathering H 2 O Friday 21 October 2011 Canyons are formed by a process of long-time erosion by rain and rivers. The most famous canyon is the Grand Canyon in Arizona in the USA. It has an average depth of one mile and a volume of 4.17 trillion cubic metres. That is big!! How Science Works: Research into chemicals of the lithosphere particularly ionic compounds and minerals like calcite, pyrite and haematite. Preparing for the next lesson: The chemical formula for water is ________. Water has a slight positive _______ at one end and a negative one at the other. This property allows it to dissolve charged ionic compounds and when ____________ takes place, ________ dissolve in the water. C5.3 Decide whether the following statements are true or false : False True 3: Water dissolves compounds that aren’t ionic ? False True 2: The name for salt you put on food is potassium chloride ? False True 1: Water molecules contain two covalent bonds ?
20. Chemicals of the lithosphere Decide whether the following statements are true or false: Lesson objectives: Understand and identify the chemicals found in Earth’s crust Understand the rocks are formed from minerals many of which are ionic compounds Understand the nature of the ionic bond and the properties of ionic salts Friday 21 October 2011 First activity: Name the three types of rocks found in the Earth’s crust and mane one type of rock that falls into each group Describe how each rock type is formed ? Literacy: Crust, lithosphere, sodium chloride, ions, ionic bond, rocks, rock salts, minerals, abundant, lithosphere, salts, ions and ionic bonding Numeracy: Ionic compounds contain ions which are either negatively or positively charged. In a ionic compound the overall charge of the compound is always zero. PLTS Independent enquirers Creative thinkers Reflective learners We will focus on reflective learners as we will look back at ionic bonding and compare it with covalent bonding. Team workers Effective participators Self managers C5.4
21. Extension questions: 1: Write a sentence describing the differences between rock, mineral and lithosphere ? 2: What is the most abundant and second most abundant metals in the lithosphere…give a use for each metal ? 3: What is the most abundant non-metal ? 4: Name the elements found in the following minerals a) Haematite Fe 2 O 3 , b) Calcite CaCO 3 c) Pyrite FeS 2 and d) Rock salt NaCl ? 5: Draw a thee dimensional crystal of sodium chloride containing 9 sodium ions and 9 chloride ions ? Know this: a: Know that rocks are formed from minerals and that minerals are made up of simple or complex chemicals Know that sodium chloride, sodium (Na + ) has the positive charge and chlorine (Cl - ) has the negative charge. Friday 21 October 2011 Introduction: We live on the crust of the lithosphere. There are many different types of rock and different sizes; from pebbles to cliffs. All rocks are made of minerals; they may be one mineral or a composition of many. Sandstone is mostly silicon dioxide whereas granite is a mix of many different minerals compacted together. Minerals are naturally occurring chemicals that may be found as elements such as gold or in compounds such as iron oxide or silicon dioxide. Many of the minerals are ionic compounds like sodium chloride. As the crystal of sodium chloride form, ions are packed closely together and are held there by the opposite charges of the ions. This is ionic bonding which is very strong due to the strong attraction of the ionic charges. Chemicals of the lithosphere C5.4
22. Key concepts Look at the photograph and information and answer all the questions: Name the elements found in a) iron pyrite FeS 2 , Calcite (CaCO 3 ) and Haematite (Fe2O 3 ) ? Metals are extracted from minerals ore, name three metals and their ores ? The rocks you see around you - the mountains, canyons & riverbeds, are all made of minerals. A rock is made up of 2 or more minerals. A mineral is composed of the same substance throughout. Minerals are made of chemicals - either a single chemical or a combination of chemicals. There are about 3000 different minerals in the world. These 3000 minerals can be sorted into just 8 groups. C5.4 a Minerals found in rocks Iron pyrite Calcite Haematite FeS 2 CaCO 3 FeO 3
23. Key concepts Look at the photograph and information and answer all the questions: Give three uses of salt, for example it is used a a raw material in the extraction of chlorine ? Name three other ionic compounds other than salt, sodium chloride ? Sea water contains lots of dissolved ionic compounds like sodium chloride. When the water evaporates, the dissolved ionic compound crystallise. This is how common rock slat (halite is formed) All minerals formed in this way are called evapourites. In Cheshire we have huge deposits of rock salt that were formed about 200 million years ago. They have since be covered by other sedimentary rocks. C5.4 b Formation of evapourites Na + Cl -
24. Key concepts Look at the photograph and information and answer all the questions: Ions of atoms build crystals. The structure extends itself in all directions, giving the crystal a regular arrangement of ions called a lattice. For sodium chloride, the ions arrange themselves alternatively in all three dimensions. This gives sodium chloride crystals a cubic shape. All ionic solids have similar ionic structures to sodium chloride. Write the formulae of the following ionic compounds a) magnesium chloride b) aluminium oxide c) calcium carbonate and d) copper sulphate ? Explain (looking at the picture opposite) the arrangement of the sodium and chloride ions in sodium chloride ? Which of the following compounds contain molecules and which contain ions a) Octane b) copper oxide c) water d) hydrochloric acid and e) calcium chloride ? C5.4 c Ionic bonding in sodium chloride
25. Key concepts Look at the photograph and information and answer all the questions: Sea water contains lots of dissolved ionic compounds like sodium chloride. When the water evaporates, the dissolved ionic compound crystallise. This is how common rock slat (halite is formed) All minerals formed in this way are called evapourites. In Cheshire we have huge deposits of rock salt that were formed about 200 million years ago. They have since be covered by other sedimentary rocks. Explain what happens to the single electron placed in the outer orbital of the sodium atoms as sodium chloride is formed ? Draw using the dot and cross diagram (outer shell only) the product sodium chloride showing the correct charge on the ions of each atom ? Do a similar dot and cross diagram to show a) the transfer of electrons between magnesium and chlorine and b) the products of this reaction ? Na (s) + Cl 2 (g) 2NaCl (s) C5.4 d Ionic bonding in sodium chloride 11 23 Na 17 35.5 Cl
26. Plenary Lesson summary: Ionic minerals granite lithosphere Friday 21 October 2011 Evaporation is an essential part of the water cycle. Solar energy drives evaporation of water from oceans, lakes, moisture in the soil, and other sources of water. Over time the process of water evaporating form shallow seas created vast deposits of rock salt. In Cheshire this is mine to extract brine and salt which is used to preserve food and in the extraction of chlorine. How Science Works: Research about the chemical and physical properties of silicon dioxide in quartz. Preparing for the next lesson: ________ bonds are very strong as they contain two charged ions that attract to each other. Within the _________ there are many rocks that contain different _________. __________ is one example that contains quartz, feldspar and mica. C5.4 Decide whether the following statements are true or false : False True 3: Ionic bonds are very strong and requires large amount of energy to break ? False True 2: Granite is made of two minerals mixed together ? False True 1: The structure of ionic crystal is called a large ionic structure ?
27. Silica and silicates of the lithosphere Decide whether the following statements are true or false: Lesson objectives: Understand the chemical and physical properties of silicon dioxide, SiO 2 . Understand how silicon dioxide can form giant covalent structures. Understand what silicates and silica refers to. Friday 21 October 2011 First activity: Explain the difference between covalent and ionic bonds in as few sentences as possible. You can use diagrams to help you explain ? Literacy: Silicon dioxide, SiO 2 , minerals, quartz, sandstone, gemstones, giant covalent structures, silica and silicates. Numeracy: Ike carbon, silicon being in group four of the periodic table can form four covalent bonds and oxygen forms two. Silicate minerals (general formula SiO 2 ) make up 95% of the Earths crust. PLTS Independent enquirers Creative thinkers Reflective learners We will focus on team workers as you will need to work well in teams to get the best out of everyone Team workers Effective participators Self managers C5.5
28. Extension questions: 1: Give three possible uses of silicon dioxide as an abrasive ? 2: What is an insulator and why can it be used in electrical devices ? 3: Why is sandstone suitable for buildings, but not for making kitchen worktops. Why might granite be better ? 4: Explain why silicon dioxide not soluble in water ? 5: Explain quartz hardness and high melting point based on its structure ? Know this: a: Know the physical and chemical properties of silicon dioxide. b; Know that quartz is used in communications c: Know that amethysts, form of quartz is a valuable gemstone. Friday 21 October 2011 Introduction: The mineral silica contains the compound silicon dioxide. The most common crystallised form of this is quartz. When silicon bonds with oxygen, four bonds are formed by silicon and two by oxygen. This creates a giant covalent structure. The covalent bonds between silicon and oxygen are very strong and therefore the giant covalent structure is too. This means that silicon dioxide has some very important properties including being very hard, having a very hard melting point, its’ insoluble in water and acts as an electrical insulator. Silica and silicates of the lithosphere C5.5
29. Key concepts C5.5 a Look at the photograph and information and answer all the questions: Look at the bonding it silicon dioxide show above, explain how the oxygen and atoms are arranged ? Quartz is a naturally occurring silicate mineral composed of silicon dioxide (SiO 2 ). Its hardness is 7 on the Mohs scale and it is in the trigonal crystal system. Quartz can be found in all three rock types, igneous, metamorphic, and sedimentary. Quartz has a white streak, but specimens can be appear coloured by impurities or exposure to heat or radiation to hues of white, pink, red, yellow, blue & green, What other substance is known for its incredible hardness and very high melting point and do you think this substance is also a giant covalent structure ?
30. Key concepts C5.5 b Look at the photograph and information and answer all the questions: Quartz has a meting point of 1610 o C why does this make it suitable as a lining for high temperature ovens ? Quartz is the most common mineral on the face of the Earth. Quartz is not the only mineral composed of SiO 2 . Quartz minerals are very stable and only under high temperatures and high pressures or both do they melt . The strength of quartz and its very high melting points makes it useful in industry, for example sandpaper uses quartz as the abrasive. It can also be used to line high temperature ovens. Physical properties Strong, rigid, giant covalent structure High melting point difficult to breakdown Will resist weathering and erosion by water and wind Use in sandpaper as an abrasive to clean wood and metal Used to line high temp ovens and pottery ovens Used in sandstone to build buildings Uses and applications Based on the giant covalent structure found in quartz, explain the following a) its hardness, and b) its insulating properties ?
31. Plenary Lesson summary: oxygen dioxide hard covalent Friday 21 October 2011 Quartz crystals have piezoelectric properties; they develop an electric potential upon the application of mechanical stress. This means that they are used in wave machines that transform the up swell of the seas and oceans into an electrical current. They are also used in lighters to create a spark to light the gas fuel. How Science Works: Research about chemicals of the biosphere including molecules like glucose, carbohydrates, proteins, lipids and DNA. Preparing for the next lesson: Silicates are very common minerals and consist of silicon ________. They form giant __________ structures due to the bonds between silicon and __________. The properties of this structure such as being very __________ give it many possible uses. C5.5 Decide whether the following statements are true or false : False True 3: Silicon dioxide is used in electrical equipment as it conduct electricity well ? False True 2: Silicon dioxide is used to line extremely hot furnaces ? False True 1: Quartz is very expensive and rarely found in Earth’s crust ?
32. C5.6 Chemicals of the biosphere Decide whether the following statements are true or false: Lesson objectives: Understand the nature of biological molecules found in living organisms Understand the importance of carbohydrates, lipids, proteins and DNA Friday 21 October 2011 First activity: Name three sources in the diet for a) proteins b) lipids, c) starch. Explain what happens to them during digestion and what does the body use them for ? Literacy: Protein, carbohydrate, lipids, carbon, carbon chains, biological molecules, building blocks, photosynthesis, DNA and biosphere Numeracy: Within your DNA found in every cell (except red blood cells) there are 30,000 genes that control or all your characteristics and unless you are an identical twins this is code is unique. PLTS Independent enquirers Creative thinkers Reflective learners We will focus on being an independent enquirer and find out information by yourself without somebody's help Team workers Effective participators Self managers
33. C5.6 Chemicals of the biosphere Extension questions: 1: List the seven vital nutrients to support life ? 2: In that list of seven nutrients only three provide the body with energy and the building blocks for other biological molecules, which three ? 3: What function do a) protein and b) lipid play in the body? 4: What element is common in nucleic acids but not in carbohydrates? 5: What are the four bases found in nucleic acids ? Know this: a: Know the nature of biological molecules found in living organisms. b: Know that DNA stands for deoxyribonucleic acid c: Know that long chain molecules made form monomers are called polymers. Friday 21 October 2011 Introduction: The element carbon is vital to all life and biological molecules in the biosphere would not exist without it. Carbon can form long chains with other carbon atoms as they form four strong covalent bonds. Proteins, carbohydrates, lipids and Nucleic acids all vital for life, contain carbon. Proteins are needed for your body to grow and are made up of long chains of amino acids. Carbohydrates are sugars that are needed for energy. Lipids are needed to make hormones, cell membranes and as long term energy stores. Nucleic acids are chemicals that carry genetic code.
34. Key concepts Look at the photograph and information and answer all the questions: Name three naturally occurring polymers (e.g. proteins) and three synthetic polymers (e.g. Nylon) ? Compare the different properties and roles of proteins and carbohydrates in the body ? The human body contains thousands of different biological molecules, each with a specific role. May of then biological molecules are polymers or long chain molecules with a carbon back bones Carbon can form these different molecules because of its unique ability to form four covalent bonds. These properties of carbon allows for an amazing variety of compounds all essential to life. C5.6 a Muscles fibres consist of proteins polymers Bones contain minerals built around a protein (collagen) Cells contain DNA built from thousands of nucleotides Hair is made from keratin protein Glycogen a polymer of glucose is stored in the liver Haemoglobin a protein rich in iron that carries oxygen
35. Key concepts Look at the photograph and information and answer all the questions: What role or roles do the following cell parts or cell organelles play in plant or animal cells a) mitochondria b) chloroplast and c) vacuole ? Name the three elements that make carbohydrates and what are their role in both plants and animals ? Cell organelles, like mitochondria and chloroplasts carry out important functions in plant and animal cells. The nucleus controls the activity of the cell by building new proteins including enzymes. It also contains DNA, the material of inheritance. Mitochondria found in both plant and animal cells respire glucose with oxygen releasing cellular energy, carbon dioxide and water. Chloroplasts found only in plant cells produce glucose and oxygen from carbon dioxide and water. Molecules in animal cells Molecules in plant cells C5.6 b Nucleus Nucleus Cytoplasm Cytoplasm Cell membrane Cell membrane Mitochondria Mitochondria Chloroplast Vacuole Cell wall
36. Assessment for learning...key concepts Look at the photograph and information and answer all the questions: Explain the difference between a) a gene and DNA and b) a chromosome and gene ? Explain why your chromosome stay in the cell nucleus ? We humans have 23 pairs of chromosomes making 46 in total that carry the many thousands of genes, in sequence, that determine the our characteristics. Each chromosome normally consists of one very long double strand (or molecule) of DNA, coiled and folded to produce a compact structure. DNA is made form just four different nucleotides: adenine, cytosine, guanine and thymine C5.6 c Name the elements that are present in DNA’s nucleic acids?
37. C5.6 Plenary Lesson summary: protein nucleic carbon amino acids Friday 21 October 2011 Did you know that much of your DNA is called ‘junk DNA’ as it does not have any purpose. Your cells cut out the junk when they are making proteins (structural or enzymes). Only certain genes are switched on or are active in the cell. How the cell does this and pick the right genes is still unclear. How Science Works: Research into what impact humans have on the four different spheres. Preparing for the next lesson: The biosphere contains many important chemicals such as carbohydrates and ___________ which are made of ___________. __________ acids such as DNA carry our genetic code. All these chemicals contain _____________. Decide whether the following statements are true or false : False True 3: Carbon can form four covalent bonds with other non metal atoms ? False True 2: You inherit you DNA form your mother and father ? False True 1: Proteins are made up of long chains of glucose monomers ?