Writing Formulas and Naming Compounds – Flashcards
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criss-cross method
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numerical value of the charge of earch ion is crossed over and becomes the subscript for the other ion
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ionic compound
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a compound composed of positive and negative ions
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ion
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an atom or group of atoms that has a positive or negative charge
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monoatomic ion
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a single atom with a postitive or negative chare resulting from the loss or gain of one or more valence electrons
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polyatomic ion
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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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cation
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any atom or group of atoms with a positive charge
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anion
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any atom or group of atoms with a negative charge
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molecular formula
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a chemical formula of a molecular compound that shows the number and kinds of atoms present in a molecule of a compound
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chemical formula
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an expression that indicates the number and type of elements present in the smallest representative unit of a substance
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molecular compound
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a compound that is composed of molecules
