Chemistry Crossword

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