| A | B |
|---|
| chemical formula | chemical shorthand uses symbols to tell what elements are in a compound and their ratios. |
| chemical bond | force that holds atom together in an compound |
| ion | charged particle that has either more or fewer electrons than protons |
| ionic bond | attraction formed between oppositely charged ions in an ionic compound |
| covalent bond | attraction formed between atoms when they share electrons |
| molecule | a neutral particle that forms as a result of electron sharing |
| polar molecule | molecule with a slightly positive end and a slightly negative end as a result of electrons being shared unequally. |
| nonpolar molecule | molecule that shares electrons equally and does not have oppositely charged ends. |
| binary compound | compound that is composed of two elements |
| oxidation number | positive or negative number that indicates 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 | compound that has water chemically attached to its ions and written into its chemical formula |
| anhydrous | a compound that does not have water as part of its structure |
