| A | B |
|---|
| Pure substance | Fixed, unifirm composition |
| Element | Contains only one type of atom |
| Compound | Cpntains two or more elements joined in fixed proportion |
| Mixture | Composition is not fixed. |
| Heterogeneous mixture | Parts are noticeably different |
| Homogeneous mixture | Parts are evenly distributed |
| Separation | Heterogeneous that separates over time |
| Colloid | Milk and fog are examples |
| High viscosity | Slow moving |
| Low viscosity | Fast moving |
| Malleability | Ability to be hammered without scattering |
| Density | Ratio of mass to volume |
| Filtration | Separates particles based on size |
| Distillation | Separates substances based on boiling points |
| Physical change | Some properties change, but the material remains the same; example ice to water |
| Chemical change | A substance reacts and forms new products |
| Evidence of chemical change | color change, gas evolved, precipatate formed are examples |
