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Chem Unit three
| Term | Definition |
|---|---|
| Nonpolar covalent | Electrons are shared equally by bonded atoms; balanced charge |
| Ionic Bonds | When electrons are transferred between a metal and nonmetal |
| covalent bond | when electrons are shared between two non metals |
| polar covalent | bonded atoms have an unequal attraction for shared electrons; unbalanced charge |
| metallic bond | delocalized electrons move freely among positively charged ions |
| polyatomic ion | charged group of covalently bonded atoms |
| octet rule | outermost valence shell needs 8 electrons for stablilty |
| oxidation number | number assigned to the charge of an ion in buliding compounds |
| stock system | uses roman numeral to indicate ion's charge |
| electron dot notation | only valence electrons of an element are placed around the element symbol |
| Nomenclature | a naming system |
| Volatile | readily evaporates into a gas |