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6 Cards in this Set
- Front
- Back
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ion
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an atom that has a positive or negative charge because it has unequal numbers of protons and electrons
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ionization
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the process of giving up or gaining electrons
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molecule
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the resulting combination when two or more atoms share electrons; O2
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compound
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a substance that contains atoms of two or more different elements; H2O, NaCl
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free radical
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an electrically charged atom or group of atoms with an unpaired electron in the outermost shell--unstable, highly reactive, and destructive to nearby molecules
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antioxidants
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substances that inactivate oxygen-derived free radicals: selenium, zinc, beta-caroten, and vitamins C and E
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