chemistry

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Across
  1. 3. causes the temperature to cool
  2. 5. a sign of fire in a chemical change
  3. 7. when something heats up
  4. 8. a sign of a chemical change
  5. 9. when a substance changes but doesn't get a new identity
  6. 11. causes the temperature to rise
  7. 12. they hold atoms together
Down
  1. 1. the study of matter
  2. 2. solid,liquid,and gas
  3. 4. color changing
  4. 6. when a new substance forms
  5. 10. when a substance forms a entire new identity