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AHS Chem B - Test 1
Nomenclature Unit Vocabulary Words
| Term | Definition |
|---|---|
| percent composition | The percent by mass of each element in a compound. |
| empirical formula | A formula with the lowest whole-number ratio of elements in a compound. |
| molar mass | A general expression used to refer to the mass of a mole of any substance. |
| ionic compound | Compound composed of positive and negative ions. |
| molecular compound | Compound composed of molecules. |
| monatomic ion | A single atom with a positive or negative charge as a result of losing or gaining valence electrons. |
| polyatomic ion | A tightly bound group of atoms that behaves as a unit and carries a charge. |
| anion | Any atom or group of atoms with a negative charge. |
| cation | Any atom or group of atoms with a positive charge. |
| ion | An atom or group of atoms that has a positive or negative charge. |
| binary compound | A compound composed of two elements. |
| chemical formula | Shows the number and type of atoms present in the smallest representative unit of a substance. (Ex: NH3) |
| ternary compound | A compound containing atoms of three different elements, usually containing at least one polyatomic ion. (Ex: Na2CO3) |
| anion | Fluorine with a -1 charge (anion or cation?) |
| cation | Beryllium with a +2 charge (anion or cation?) |
| monatomic ion | Phosphorus with a -3 charge (monatomic ion or polyatomic ion?) |
| polyatomic ion | (PO4) with a -3 charge (monatomic ion or polyatomic ion?) |
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krollj
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