Across
- 1. Chemical substance held together by attraction of atoms
- 4. The same
- 5. Become liquefied by heat
- 10. AKA chemical substance
- 11. A change that can't be reversed
- 12. Firm shape
Down
- 2. Makes up the periodic table
- 3. Different
- 6. Solid, liquid, gas
- 7. For ex. H2O
- 8. Substances mixed together
- 9. A change that can be reversed