Chemistry

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Across
  1. 3. the weight of matter
  2. 5. stuff that takes up space
  3. 7. reaction absorbing heat
  4. 10. amount of heat
  5. 11. 1 basic chemical particle
  6. 14. forming a whole
  7. 16. the difference in the compound
  8. 17. reaction releasing heat
Down
  1. 1. a difference on the outside
  2. 2. 1 element
  3. 4. 2 or more atoms
  4. 6. several elements combined
  5. 8. the effect
  6. 9. type of science
  7. 12. the end result
  8. 13. the mass
  9. 15. made of several atoms
  10. 18. the temperature