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Chapter 20
Chapter 20 Vocabulary
| Term | Definition |
|---|---|
| chemical formula | tells what elements a compound contains & the exact same # of atoms of each element in a unit of that compound |
| chemical bond | the for that holds atoms together in a compound |
| ion | a charged particle because it now has either more or fewer electrons than protons |
| ionic bond | the force of attraction between the opposite charges of the ions in an ionic compound |
| covalent bond | the attraction that forms between atoms when they share electrons |
| molecule | a neutral particle that forms as a result of electron sharing |
| polar molecule | one that has slightly positive end and a slightly negative end although the overall molecule is neutral |
| nonpolar molecule | is one in which electrons are shared equally in bonds |
| binary compound | one that is composed of 2 elements |
| oxidation # | tells you how many electrons an atom has gained, lost, or shared to become stable |
| polyatomic ion | positively or negatively charged, covalently bonded group of atoms |
| hydrate | a compound that has water chemically attached to its ions & written into its chemical formula |