| A | B |
| Mixture | Any material made of two or more substances in which the basic identitiy of each substance is not changed |
| Heterogeneous Mixture | A mixture in which the different substances are distributed unevenly |
| Homogeneous Mixture | A mixture in which the different substances are distributed evenly throughout |
| Element | A substance that can not be broken down further into a simpler substance by ordinary physical or chemical means |
| Compound | A substance whose smallest unit is mae up of more than one element |
| Substance | One kind of material that makes up many different things |