Across
- 2. change that can be undone
- 3. change where no new substance is made
- 7. group of atoms joined together
- 9. tiny piece of matter
- 11. join between atoms
- 12. smallest particle of an element
- 13. state of matter that can fill a container
- 14. starting substance in a reaction
- 16. state of matter that flows
- 17. liquid turning into gas
Down
- 1. change that cannot be undone
- 4. reaction of iron with oxygen
- 5. state of matter with fixed shape
- 6. atoms move to form new substances
- 8. change where a new substance is made
- 10. substance made in a reaction
- 11. reaction that produces heat and light
- 14. change where new substances are formed
- 15. solid turning into liquid