| A | B |
|---|
| solid | fixed shape and fixed volume |
| liquid | variable shape and fixed volume |
| gas | variable shape and variable volume |
| plasma | given off naturally when lightening strikes |
| tightly packed molecules | solids |
| molecules slide past each other | liquids |
| molecules move freely | gas |
| most commonly state of matter in the universe | plasma |
| physical change | change the does not effect the composition |
| snow melting | an example of a physical change |
| condensation | water vapor turns into a liquid |
| Occurs when the temperature decreases | condensation |
| Occurs when the temperature increases | evaporation |
| evaporation | liquid turns into a gas |
| chemical change | Change that produces new substances with new properties |
| Fireworks exploding | An example of a chemical change |
