INTRODUCTION TO CHEMISTRY

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