Across
- 5. Harmful or excessive use of substances.
- 6. Using heat to cause chemical changes in food.
- 8. Using chemicals to remove dirt and grease.
- 9. Anything that has mass and takes up space.
- 10. A chemical reaction where iron reacts with air and water.
- 12. A change where no new substance is formed.
- 14. Everything around us that chemistry helps protect.
- 15. A process where substances change to form new substances.
Down
- 1. Chemicals used to cure or prevent diseases.
- 2. The change of a solid into a liquid by heating.
- 3. When someone cannot stop using a harmful substance.
- 4. Substances that affect how the body or brain works.
- 7. The condition of the body and mind.
- 8. The science that studies matter and how it changes.
- 11. When something becomes different from before.
- 13. A change where a new substance is made.