| A | B |
|---|
| substance | an element or a compound |
| element | contains atoms which are all the same |
| element | found on the periodic table |
| compound | made of two or more elements, cannot be separated |
| mixture | made of two or more substances, can be separated |
| homogeneous mixture | mixture that is the same throughout |
| heterogeneous mixture | mixture that is NOT the same throughout |
| colloid | heterogeneous mixture with parts that do not settle |
| suspension | heterogeneous mixture with parts that DO settle |
| Tyndall effect | scattering of light, applies to colloids |
| solution | another term for homogeneous mixture |
| physical change | change which does not alter the identity of a sample |
| chemical change | change which produces a different sample (changes the identity) |
| law of conservation of mass | law that states that mass is never lost nor gained |
