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| Indicates the relative number of atoms of each kind in a chemical compound. |
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| Ions formed from a single atom. |
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| are identified simply by the element's name. |
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| are identified as first dropping the ending of the element's name then adding the ending -ide to the root name. |
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| Compounds composed of two elements. |
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| The naming system of binary ionic compounds, which involves combining the names of the compound's positive and negative ions. |
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| Stock System of Nomenclature |
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| Roman Numeral system used to distinguish cations that can form with different charges. The numeral is enclosed in parentheses and placed IMMEDIATELY after the cation name. |
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| Ions made up of more than one atom. |
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| Rules for the Prefix System of Nomenclature |
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1. The first element is give a prefix only if it contributes more than on atom to a molecule of the compound.
2. The second element is named by the combining of a prefix indicating the number of atoms contribute by the element, the root of the name of the element and the ending (-ide).
3. The (o or a) at the end of a prefix is usually dropped when the word following the prefix begins with another vowel. |
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| Distinct type of molecular compound. |
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| Acids that consist of two elements, usually hydrogen and one of the halogens. |
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| Acids that contain hydrogen, oxygen and a third element (usually a nonmetal). |
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| Of any molecule, formula unit, or ion, it is the sum of the average atomic masses of all atoms represented in its formula. (same as molar mass except for unit) |
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| The percentage by mass of each element in a compound. |
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| Consists of the symbols for the elements combined in a compound, with subscripts showing the smallest whole number mole ration of the different atoms in the compound. |
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| Actual formula of a molecular compound. |
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