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Intro to Matter
Use this to help study for the Topic 1 test
| Term | Definition |
|---|---|
| matter | anything with mass and takes up space |
| substance | a single kind of matter with a specific make up |
| pure substance | composition is always the same |
| mixture | two or more substances not chemically combined |
| homogeneous | can't be easily separated |
| heterogeneous | mixed together but can be separated out |
| physical changes | can get it back |
| chemical changes | can't get it back |
| weight | the measure of force of gravity |
| mass | amount of matter in a object |
| gravity does not affect mass | mass does not change with the force of gravity |
| formula for density | D= mass divided by volume |
| greater density | objects sink |