Chapter 4 (The Structure of Matter)
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| Polyatomic Ion | an ion made of two or more atoms that are covalently bonded and that act like a single ion
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| Molecular Formula | a chemical formula that reports the actual numbers of atoms in one molecule of a compound
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| Bond Length | the average distance between the nuclei of two bonded atoms
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| Empirical Formula | the simplest chemical formula of a compound that tells the smallest whole-number ratio of agoms in the compound
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| Bond Angle | the angle formed by two bonds to the same atom
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| Chemical Structure | the arrangement of bonded atoms or ions within a substance
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| Chemical Bond | the attractive force that holds atoms or ions together
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| Ionic Bond | a bond formed by the attraction between opposietly charged ions
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| Metallic Bond | a bond formed by the attraction between positively charged metal ions and the electrons around them
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| Covalent Bond | a bond formed when atoms share one or more pairs of electrons
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| Protein | a biological polymer made of bonded amino acids
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| Amino Acid | any one of 20 different naturally occuring organic molecules that combine to form proteins
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| Carbohydrate | any organic compound that is made of carbon, hydrogen, and oxygen and that provides nutrients to the cells of living things
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| Biochemical Compound | any organic compound that has an important role in living things
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| Polymer | a large organic molecule made of many smaller bonded units
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| Organic Compound | any covalently bonded compound that contains carbon
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