Across
- 3. what we use to represent chemical reactions
- 6. molecules move freely
- 8. when a liquid changes to a solid
- 10. what the reaction ends with
- 12. matter changes, but no new substance is formed
- 14. What a reaction starts with
- 16. the number in front of chemical formulas to tell how many molecules there are
- 17. when a gas changes to a liquid
- 18. has mass and takes up space
- 19. type of reaction that absorbs energy from its surroundings
- 22. type of reaction that releases energy to its surroundings
- 23. matter changes so that a new substance is formed
Down
- 1. what is added to make state of matter change
- 2. anything that describes an item
- 4. matter cannot be created or destroyed, it can change forms
- 5. molecules are fluid
- 7. the small number to tell how many specific atoms are in a molecule
- 9. when a solid goes to a gas
- 11. molecules are tightly packed together
- 13. when a liquid changes to a gas
- 15. when a solid changes to a liquid
- 20. anything that proves a change has happened
- 21. when a gas changes to a solid