Across
- 3. Matter changes
- 5. Chemical, releases heat
- 6. Substance is transformed
- 7. Space occupied by an object
- 9. Combined, new
- 12. More than one atom
- 15. Hot & Cold
- 16. Atoms forced together
- 17. Observed, measured
- 20. Formed after chemical reaction
- 21. Stuff, takes up space
- 23. Elements don't chemically combine
Down
- 1. Capacity of doing work
- 2. Properties & Change in matter
- 4. Combined molecules
- 8. Speeds up chemical reaction
- 10. Can't be broken down
- 11. Energy transferred
- 13. Can change from reaction
- 14. Attractive force between substance
- 18. Chemical, absorbs heat
- 19. Smallest unit of matter
- 21. Matter of an object
- 22. Materials that undergo change