chemistry puzzle

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Across
  1. 6. measures or finds the size of something
  2. 8. gives off heat
  3. 9. particles are spread apart not fully
  4. 11. substance that contains mass
  5. 12. boiling,melting,and freezing
  6. 14. burning,cooking,rusting,and rotting
  7. 15. expressing numbers that are too large
Down
  1. 1. supplies heat
  2. 2. data that’s being compared is put in a
  3. 3. mass per unit volume
  4. 4. describes characteristics
  5. 5. data that is put in a ___ tracks changes
  6. 7. data such as % is put in a
  7. 10. particles are really spread apart from eachother
  8. 13. study of substances
  9. 15. particles are packed together