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Science unit 3
test on 11/22/13
| Question | Answer |
|---|---|
| matter | anything that has mass that takes up sapce |
| mass | a measure of how much matter an object contains |
| weight | the downward pull on a object due to the force of gravity |
| volume | the ammount of space in an object |
| attom | the smallest basic unit of matter |
| molecule | when two or more atoms combine they make a moloecule |
| element | a substance that contains only a single atom |
| compound | a substance of two or more diffrnet kindws of atoms |
| mixture | a combination of diffremnt substences that remian the smae indidiual substences |
| states of matter | doffrent forms in wich matter can exist |
| solid | a substance that has a fixed volume but not a fixed shape |
| liquid | fixed volume but no fized shape |
| gas | has no fixed volume or shape |
| particle | the atoms or molocules that make up a substance |
| freeze | changing a liquid into a solid |
| melting | changing a solid into a liquid |
| boling | changing a liquid into a gas |
| condenstaion | changing a gas into a liquid |
| sublimation | changing a solid into a gas |