and Honors Chem Chapter 1 Introduction: Matter and Measurement 1.1 The Study of Chemistry The Atomic and Molecular Perspective of Chemistry 1.2 Classifications of Matter States of Matter Pure Substances Elements Compounds Mixtures 1.3 Properties of Matter Physical and Chemical Changes Separation of Mixtures 1.4 Units of Measurement SI Units Length and Mass Temperature Volume Derived SI Units
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of a product accumulates‚ the process that creates it slows and less of the product is produced CHAPTER 2 MATTER- anything that takes up space and has mass ELEMENT- substance that cannot be broken down to other substances by chemical reactions COMPOUND- substance consisting of two or more elements in a fixed ratio‚ has characteristics different from those of its elements TRACE ELEMENT- those required by an organism in minute quantities ATOM- smallest unit of matter that still retains the properties
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(gained or lost) an electron. (Pick one) 17. An anion is an atom that has (gained or lost) an electron (Pick one) 18. When a cation bonds with an anion‚ that bond is referred to as a/an _ionic_ bond. 19. Circle the molecules that are classified as compounds (H‚ H2‚ H2O‚ C6H12O6‚ N2) 20. Find the name for each element using the periodical
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BIO Chapter 2 Study Guide 1-Know the difference between an atom‚ an element and a compound. -Atom-The basic unit of a chemical element. -Element-A unique molecule that makes up all matter and cannot be broken down any further. -Compound- Two or more elements together 2-Understand and be able to apply the concept of the Atomic number and the Atomic mass of an element. -Atomic Number- The number of protons an element has. -Atomic Mass-The number of Protons + Neutrons. *the number of neutrons
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Terms Richard was observing black swallowtail butterflies in the field. Which one of these is an observation he made about a black swallowtail butterfly? The most valid and reliable test of the hypothesis‚ more pine seeds germinate after a forest fire‚ would include an experimental group of pine seeds that was recovered from a fire area and pine seeds that were — A student wanted to look at plant growth in five different soil samples. He planted the same type of seeds in identical containers and
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1. Question : Richard was observing black swallowtail butterflies in the field. Which one of these is an observation he made about a black swallowtail butterfly? The black swallowtail laid its eggs on a parsley plant. Question 2. Question : The most valid and reliable test of the hypothesis‚ more pine seeds germinate after a forest fire‚ would include an experimental group of pine seeds that was recovered from a fire area and pine seeds that were — tolerant of fire. Question 3
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called compounds Copyright © 2005 Pearson Education‚ Inc. publishing as Benjamin Cummings Elements and Compounds • Organisms are composed of matter‚ which is anything that takes up space and has mass Copyright © 2005 Pearson Education‚ Inc. publishing as Benjamin Cummings • Matter is made up of elements‚ substances that cannot be broken down to other substances by chemical reactions Copyright © 2005 Pearson Education‚ Inc. publishing as Benjamin Cummings • A compound – Is a
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is beaten into a thin sheet (96)Which of these statements are true about every solution? (Chapter 2) a. Solutions are in the liquid state. b. Solutions are homogeneous. c. Solutions are mixtures. d. Solutions are composed of at least two compounds. (97)How does a molecule differ from an atom? (Chapter 2) (98)A student writes down the density of table sugar as 1.59 and the density of carbon dioxide as 1.83. Can these values be correct? Explain. (Chapter 3) (99)A block of wood measuring
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Introduction Notes What is Science? Study of/tool to understand/body of knowledge/process to understand the natural world What do Scientists do? Make observations Attempt to discern patters Assume the future is like the past What is Biology? The study of life What is Life? Not ever clearly defined Characteristics of living systems: Highly organized Huge energy users 90% of food we eat is used to keep us going Development Development from a single cell to billons of cells Reproduction
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Question #8 A covalent bond is one in which electron pairs are shared. A molecule is defined as two or more atoms held together by covalent bonds. This atom can form up to 4 single covalent bond(s). Question #10 A(n) double covalent bond joins these two oxygen atoms. Question #11 The oxygen atoms are sharing two pairs of electrons. A covalent bond involves the sharing of electrons Equal sharing of electrons results in a nonpolar covalent bond Electrons
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