Chemistry

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Across
  1. 2. properties
  2. 5. area
  3. 7. number
  4. 8. analysis
  5. 9. system
  6. 10. mass
  7. 11. theory
  8. 12. properties
Down
  1. 1. indicators
  2. 3. mass unit
  3. 4. electrons
  4. 6. of mass
  5. 10. ratio
  6. 11. properties