Density Worksheet Puzzle

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Across
  1. 3. Problem number 6
  2. 4. Problem number 1
  3. 5. Problem number 11 - silver
  4. 7. Problem number 16
  5. 9. Problem number 9
  6. 10. Problem number 13
  7. 11. Problem number 7
  8. 13. Problem number 3
  9. 15. Problem number 12
  10. 16. Problem number 5
Down
  1. 1. Problem number 4
  2. 2. Problem number 17 - ethanol
  3. 3. Problem number 11 gold
  4. 6. Problem number 10
  5. 8. Problem number 15
  6. 12. Problem number 2
  7. 14. Problem number 17 - benzene
  8. 16. Problem number 8