Across
- 5. when a phase needs energy to change to another phase
- 7. a group of atoms joined together in a particular way
- 8. change from a solid to a gas
- 13. a measure of how hot or cold something is
- 14. a molecule of carbon and hydrogen, a gas
- 15. the energy that an object has because it is moving
- 16. change from a gas to a liquid
- 17. a statement that needs evidence to be proven
- 19. change that happens on surface of liquid when changing to a gas
- 20. moon of Saturn
Down
- 1. a noticeably different form or state of the same substance
- 2. the ability to make things move or change
- 3. the way molecules in a substances move around
- 4. a pull between two molecules that is always the same for the substance
- 6. to provide evidence that goes against a claim
- 9. change from a solid to a liquid
- 10. the relative size of things
- 11. tiny piece of all matter-all the stuff in the world-is made of
- 12. change from a liquid to a gas
- 18. change from a liquid to a gas