Across
- 3. energy of a chemical substance
- 4. smallest unit of chemical compound
- 7. something that reacts with something
- 8. a pure substance
- 9. a type of change
- 11. something that can be observed
- 12. weight
- 15. a law of science
- 16. hot boiling water
- 17. something that takes up space
- 18. when something is so hot it decomposes
- 19. results of a reaction
Down
- 1. cannot be created or destroyed
- 2. solid liquid or gas
- 5. how cold or hot something is
- 6. other type of change than #6
- 10. a reaction
- 13. when two elements mix
- 14. how reactive something is