| A | B |
|---|
| ion | an atom or group of atoms that is electrically charged |
| negative ion | an ion that is formed when an atom or group of atomes gains and electron |
| positive ion | an ion that is formed when an atom or group of atoms loses and electron |
| ionic bond | an attraction between two oppositely charged ions |
| polyatomic ion | an ion made up of two or more atoms |
| crystal | an orderly three dimensional arrangement of ions |
| covalent bond | a bond formed when two atoms share electons |
| single bond | a covalent bond formed when atoms share one pair of electrons |
| double bond | a covalent bond formed when atoms share two pairs of electrons |
| triple bond | a covalent bond formed when atoms share three pairs of electrons |
| molecular compounds | compounds consisting of molecules with covalently bonded atoms |
| polar covalent bond | a bond in which the electons are shared unequally |
| nonpolar covalent bond | a bond in which the electons are shared equally |
| polar molecule/compound | a molecule/compound containing polar bonds |
| nonpolar molecule/compound | a molecule/compound containing nonpolar bonds |
| mineral | a naturally occurring solid that has a crystal structure |
| properties of minerals | color, shininess, density, harness, magnetism and the way in which the crystal breaks |
