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8Sci CH6
8th Science CH6 Combining Atoms
| Term | Definition |
|---|---|
| balanced chemical equation | equation with the same number of atoms of each element on both sides of the equation; whole-number coefficients can be written to balance a chemical equation |
| binary compound | compound made up of atoms of two elements |
| covalent bond | a type of bond formed between atoms when they share electrons; covalent bonds are strong and chemically stable |
| ion | positively or negatively charged atom whose charge results from the gain or loss of one or more electrons; the more electrons an atom gains or loses, the higher its charge |
| ionic bond | type of bond formed by the attraction of positively charged ions for negatively charged ions; ionic bonds hold ionic compounds together |
| molecule | neutral particles formed when electrons are shared by atoms rather than being gained or lost |
| nonpolar molecule | molecule with balanced charges whose electrons are shared equally, nonpolar molecules are not water soluble |
| oxidation number | number of electrons that an atom gains, loses, or shares when bonding with another atom; some elements have more than one oxidation number |
| polar molecule | molecule with unbalanced charges as a result of electrons being shared unequally |
| polyatomic ion | ammonium, nitrate, and phosphate are examples of polyatomic ions--all of which are made up of a group of positively or negatively charged covalently bonded atoms |
Created by:
djhockett5
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