| A | B |
|---|
| Pure Substance | Matter that always has exactly the same composition. |
| Element | A substance tht cannot be broken down into simpler substances. |
| Atom | The smallest particle of an element that retains the properties of that element. |
| Homogeneous Mixtures | Evenly distributed substance that appears to contain only one substance. |
| Heterogeneous Mixtures | Parts of the mixturre are noticeably different from one another. |
| Compound | A substance that is made from two or more simpler substances. |
| Solutions | When a substances dissolve and form a homogeneous mixture. |
| Suspensions | A heterogeneous mixture that separates into layers over time. |
| Colloids | Particles that are intermediate in size between the small particles in a solution and the larger particles in a suspension. |
| Viscosity | The resistance to flowing. |
| Conductivity | The ability to allow heat or electricity to flow. |
| Malleability | The ability to hammer into a sheet without breaking. |
| Ductility | Able to draw into wire. |
| Melting Point | The temperature at which a substance turns from a solid to a liquid. |
| Boiling Point | The temperature at which a substance turns from a liquid to a gas. |
| Filtration | the 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 point. |
| Physical Change | Some of the properties of a material change, but the substances in the material remain the same. |
| Physical Property | Any characteristic of a material that can be observed or measured without changing the compostition of the material. |
| Chemical Property | The ability to produce a change int he composition of matter. |
| Flammability | The ability to burn. |
| Reactivity | How readily a substances combines chemically with other substaces. |
| Chemcial Change | When a substance reacts and forms one or more new substances. |
| Precipitate | Any solid taht forms and separates from a liquid mixture. |
