Chemistry Crossword

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Across
  1. 2. smallest possible unit into which matter can be divided while still maintaining properties
  2. 4. energy (heat) is released
  3. 7. Hg
  4. 10. energy (heat) is absorbed
  5. 12. negatively charged particles
  6. 14. atoms have same number of protons, but have different # of neutrons
Down
  1. 1. stored in the chemical bonds of a substance
  2. 3. the # of protons in the nucleus
  3. 5. Gold
  4. 6. Sn
  5. 8. any substance that cannot be decomposed into simpler substances by ordinary chemical processes.
  6. 9. protons + neutrons
  7. 11. can be shaped
  8. 13. K