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Phase Change Review
review phases of matter & phase changes
| Term | Definition |
|---|---|
| solid | molecules vibrate in place |
| liquid | molecules move around each other slowly |
| gas | molecules move away from each other |
| solid | holds its shape; does not take the shape of its container |
| matter | anything that has mass and takes up space |
| phase | a noticeably different form or state of the same substance |
| liquid | flows; takes the shape of its container. |
| Gas | has no visible shape; fills its container |
| macroscale | large and easily seen |
| molecular Scale | too tiny to see without tools |
| freedom of movement | the way molecules in a substance move around relative to each other |
| melting | solid turning to liquid |
| freezing | liquid turning to solid |
| evaporation | liquid turning to gas |
| condensation | gas turning to liquid |
| If you ADD kinetic energy... | molecules move faster and temperature rises (causes melting and evaporation) |
| If you REMOVE kinetic energy... | molecules move slower and temperature goes down (causes freezing and condensation) |