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        | involve atoms of two or more elements, chemically combined, with the atoms in fixed whole number ratios. In general, they can be molecular or ionic |  | 
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        | some compounds form solids called... |  | Definition 
 
        | hydrates, which contain water molecules in definite proportions |  | 
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        | Contains the type and number of atoms in each molecule of a molecular compound. |  | 
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        | are formed bw a metal and a non-metal |  | 
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        | the metal ion becomes a ___________ and the non-metal an ____________ |  | Definition 
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        | the formula of such a compoound fives the smallest whole # ratio of the ions and is called _________ |  | Definition 
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        | MOLECULAR and FORMULA MASSES |  | Definition 
 
        | of molecular and ionic compounds, respectively, refers to the mass in atomic mass units (u) of all atoms in a chemical formula. |  | 
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        | (mass of element/total mass of compound) x 100% |  | 
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        | of an unknown compound gives the simplest ratio of atoms of each element in a molecular compound, and can be determined from its experimentally determined mass percent composition |  | 
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        | the molecular formula of the compound can be determined from the ___________ when the molar mass of the compound is known |  | Definition 
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        | Molecular formula molar mass = |  | Definition 
 
        | empirical formula molar mass x 'integral factor |  | 
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