| Term | Definition |
| Viscosity | he tendency of a liquid to keep from flowing—its resistance to flowing |
| Conductivity | A material's ability to allow heat to flow |
| Malleability | The ability of a solid to be hammered without shattering. |
| Melting Point | The temperature at which a substance changes from solid to liquid |
| Physical Property | any characteristic of a material that can be observed or measured without changing the composition of the substances in the material. |
| Boiling Point | The temperature at which a substance boils |
| Filtration | a process that separates materials based on the size of their particles. |
| Distillation | a process that separates the substances in a solution based on their boiling points. |
| Physical Change | occurs when some of the properties of a material change, but the substances in the material remain the same. |