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Atomic physics

The Chemistry Of Life

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Chapter 2 The Chemical Context of Life Elements and Compounds An element is a substance that cannot be broken down to other substances by chemical reactions A compound is a substance consisting of two or more elements in a fixed ratio Sodium Chlorine Sodium chloride Essential Elements of Life Carbon, hydrogen, oxygen, and nitrogen make up 96% of living matter Trace elements are those required by an organism in minute quantities LE 2-3 Nitrogen deficiency Iodine deficiency LE 2-4 Nucleus Electrons Cloud of negative charge (2 electrons) Atomic Number and Atomic Mass Atoms of the various elements differ in number of subatomic particles Atomic number Mass number Atomic mass Isotopes Atoms of an element have the same number of protons but may differ in number of neutrons

Chem Scientists and Definitions

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Knights Bachelor
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electron
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J. J. Thomson
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Democritus Greek; said that everything in the universe starts with small pieces of un-cuttable (atomos) pieces of matter but had no proof ? Aristotle Greek; said there was no such thing as the smallest piece of matter; he was the good speaker therefore people of his time believed him John Dalton created the Atomic Theory in the 1800's The Atomic Theory says that all things in the world are made of atoms, and if the materials are the same, the atoms are identical especially in their mass; different elements have different atoms and a chemical reaction is a rearrangement of atoms William Crookes

Bio stuff

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ion
Electronegativity
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Metalloid

Periodic Table Worksheet Name Per. 1. Periodic means . Examples of periodic properties: 2. What is a group (or family)? What is a period? 3. How can you determine the number of electrons in an element?s outer energy level by the group it?s in? 4. What is the octet rule? 5. Why do elements that make positive ions occur on the left side of the periodic table while those that make negative ions occur on the right? 6. What is the common name for group 18? Why do the elements of this group usually not form ions? 7. Complete the following table. Group Common Name Charge on Ions of this Group 1 2 13 / 3A -------- 16 / 6A -------- 17 / 7A 8. Predict the charges on ions of the following atoms.

Campbell Biology Chapter 1-4 Outline

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electron
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The Chemical Context of Life 8/22/13 6:23 PM Chapter 1: Exploring Life Biology?s Most Exciting Era Biology- the scientific study of life Biologists explore life from the microscopic to the global scale A Hierarchy of Biological Organization The biosphere- consists of all the environments on Earth that are inhabited by life. Ecosystems- consists of all the living things in a particular area, along with all the nonliving components of the environment with which life interacts. Ex. forest The biosphere is composed of ecosystems Communities- the entire array of organisms inhabiting a particular ecosystem. The set of populations that inhabit a particular area Populations- consists of all the individuals of a species (forms of life) living within the bounds of a specified area

Campbell Biology 9th edition

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Campbell Biology Review Chapter 2 1. All organisms are composed of ____________, which is defined as anything that occupies space and has mass. 2. What is the definition of an element? 3. How does a compound differ from an element? 4. What four chemical elements compose about 96% of living matter? 5. What name is given to elements found in small amounts that are necessary to living matter? 6. Which of these elements (type given above) is necessary to man and other vertebrates but not to other living organisms? a. Oxygen b. Iodine c. Phosphorus d. Calcium e. None of the Above 7. What element, known as a toxin to man, has inadvertently been found in Asian drilled wells, exposing many to its dangerous effects?

Campbell Biology 9th edition

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Chemistry
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electron
ion
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Campbell Biology Review Chapter 2 1. All organisms are composed of ____________, which is defined as anything that occupies space and has mass. 2. What is the definition of an element? 3. How does a compound differ from an element? 4. What four chemical elements compose about 96% of living matter? 5. What name is given to elements found in small amounts that are necessary to living matter? 6. Which of these elements (type given above) is necessary to man and other vertebrates but not to other living organisms? a. Oxygen b. Iodine c. Phosphorus d. Calcium e. None of the Above 7. What element, known as a toxin to man, has inadvertently been found in Asian drilled wells, exposing many to its dangerous effects?

AP Chemistry periodic notes

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Chapter 7 ? Periodic Properties of the Elements 7.1 Development of the Periodic Table ? Majority of elements discovered 1735-1843 ? Elements arranged to reflect trends in chemical and physical properties ? Periodic table arose from periodic patterns in electronic configurations o Valence orbitals o Trends in rows and columns ? Mendeleev and Meyer ? Modern periodic table 7.2 Effective Nuclear Charge Effective nuclear charge (Zeff) is the charge experienced by an electron on a many-electron atom. The effective nuclear charge is not the same as the charge on the nucleus because of the effect of the inner electrons. ? The electron is attracted to the nucleus, but repelled by electrons that shield or screen it from the full nuclear charge.

chemistry midterm review

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Transition metal

Name: ________________________ Class: ___________________ Date: __________ ID: A 1 MIDTERM REVIEW Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. Inorganic chemistry is the study of a. non-carbon related compounds. b. the chemistry of living things. c. mathematical modeling. d. the identification of the composition of materials. ____ 2. A student recorded the following while completing an experiment. Color of substance: yellow, shiny powder Effect of magnet: yellow, shiny powder was attracted The student should classify the substance as a(n) a. element. c. mixture. b. compound. d. plasma. ____ 3. Which of the following is not a physical change? a. grinding c. boiling b. cutting d. burning

Chapter 2 power points. Campbell Biology, 9th edition

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Chemistry
Behavior
Rubiaceae
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Duroia
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Jane Reece
Neil Campbell
Formic acid
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Campbell Biology 9th edition
chapter 2
Chapter 2 The Chemical Context of Life Camobell Bio 9th Edition

? 2011 Pearson Education, Inc. LECTURE PRESENTATIONS For CAMPBELL BIOLOGY, NINTH EDITION Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson Lectures by Erin Barley Kathleen Fitzpatrick The Chemical Context of Life Chapter 2 Overview: A Chemical Connection to Biology ? Biology is a multidisciplinary science ? Living organisms are subject to basic laws of physics and chemistry ? One example is the use of formic acid by ants to maintain ?devil?s gardens,? stands of Duroia trees ? 2011 Pearson Education, Inc. Figure 2.2 Duroia tree Devil?s garden Cedrela sapling Inside, unprotected Inside, protected Insect barrier Outside, protected Outside, unprotected EXPERIMENT

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