| A | B |
| matter | anything having mass and volume |
| mass | amount of matter in an object |
| volume | amount of space matter takes up |
| composition | what matter is made of |
| properties | characteristics of matter |
| atom | basic unit of matter |
| pure substance | type of matter in which all samples have the exact same properties |
| elements | pure substance containing only one type of atom |
| compounds | pure substance containing 2 or more types of atoms that are chemically bonded together |
| mixtures | combinations of 2 or more substances where each substance retains its individual properties |
| homogeneous | a mixture with a composition and properties that are identical regardless of the sample |
| heterogeneous | a mixture with a composition and properties that differ in any given sample. |
| Solution | another name for a homogeneous mixture |
| suspensions | type of heterogeneous mixture that appears to be uniform when mixed but will settle out. |
| colloids | type of heterogeneous mixture that appears uniform but will not settle out |
| tyndall effect | scattering of light when a beam is sent through a colloid |
| metals | usually shiny, dense elements that are good conductors of heat and electricity |
| metalloids | elements that have characteristics of metals and non-metals |
| non-metals | usually dull, less dense elements that are poor conductors of heat and electricity |