andrew kellmurray's crossword.

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Across
  1. 4. a response from doing something
  2. 8. something made of two or more elements
  3. 9. the amount of space something takes up
  4. 11. a substance that cannot be broken down into another substance
  5. 13. to release heat into the surroundings
  6. 14. a substance made by mixing another substance
  7. 15. power from physical or chemical resources
  8. 16. something increasing the rate of a reaction
  9. 17. the amount of material something contains
Down
  1. 1. a group of two or more atoms
  2. 2. something that undergoes change during a reaction
  3. 3. the result of something
  4. 5. a join of something
  5. 6. the smallest particle in the universe
  6. 7. two things sticking together
  7. 10. what a physical product is made of
  8. 12. a branch of science
  9. 13. to take in heat from the environment