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| an electron in the highest occupied energy level of an atom |
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| a compound composed of positive and negative ions |
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| the electrostatic attraction that binds oppositely charged ions together |
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| an expression that indicates the number and type of atoms present in the smallest representative unit of a substance |
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| a bond formed by the sharing of electrons between atoms; may be single, double, or triple bonds |
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| a neutral group of atoms joined together by covalent bonds |
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Definition
| a molecule consisting of two atoms |
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| a tightly bound group of atoms that behaves as a unit and has a positive (+) or negative (-) charge |
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| the substances you start with in a chemical reaction |
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| the substances you end with after a chemical reaction has occurred |
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| Single-Replacement Reaction |
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| Double-Replacement Reaction |
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