Science vocabularly (no spaces in words)

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Across
  1. 4. A chemical change that causes the release of heat
  2. 6. Cannot be created or destroyed, but may change form
  3. 7. A chemical change accompanied by the loss of heat
  4. 9. How much exposed area a solid object has
  5. 10. Something that increases the rate of the reaction but does not undergo change
Down
  1. 1. The small text in a chemical formula next to an element showing how much of the element is present.
  2. 2. How tightly packed the reactants are
  3. 3. The result of a chemical reaction
  4. 5. Cannot be created or destroyed
  5. 8. Something that undergoes a change during a chemical reaction