| A | B |
|---|
| Matter | Anything that has mass and occupies space. |
| WHMIS | Workplace Hazardous Materials Information System |
| Melting | A change from a solid to a liquid. |
| Evaporation | A change from a liquid to a gas. |
| Condensation | A change from a gas to a liquid. |
| Freezing | A change from a liquid to a solid. |
| Sublimation | A change from a solid directly into a gas. |
| Physical Properties | Property that describes the physical appearance and composition of a substance. |
| Physical Change | Change in the appearance or state of a substance that does NOT change its composition. |
| Malleable | A substance that can be pounded or rolled into sheets. |
| Chemical Property | Description of how a substance interacts with other substances - only observable when a chemical change occurs. |
| Chemical Change | Change that results when two or more substances react to create a different substance or substances. |
| Pure Substance | Made up of only one kind of matter. |
| Element | A material that cannot be broken down into any simpler substance. A basic building block for compounds. |
| Compound | When two or more elements combine chemically they form this substance. |
| Mixture | A combination of pure substances that DO NOT combine chemically. |
| Mechanical Mixture | The different substances that make up this mixture are visible. |
| Solution | One substance is dissolved in another and the different substances that make it up are not separately visible. |
| Suspension | A cloudy mixture in which tiny particles of one substance are held within another. Example - tomato juice |
| Colloid | Cloudy mixture in which the suspended particles cannot be easily separated. Example - milk. |
