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the smallest unit of a substance that exhibits all of the properties characteristic of that substance
a bond formed by the attraction between positively charge metal ions and the electrons around them
an ion made of two or more atoms that are covalently bonded and that act like a single ion
the simplest chemical formula of a compound that tells the smallest whole-number ratio of atoms in the compound
a chemical formula that reports the actual numbers of atoms in one molecule of a compound
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