Periodic Table

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Across
  1. 4. are pure substances
  2. 7. found in salt
  3. 9. used to make jewelry
  4. 11. used to make light bulbs
  5. 12. found in batteries
  6. 13. used in balloons
  7. 15. found in air
  8. 17. table, where elements are found
Down
  1. 1. found in shells and bones
  2. 2. used to make poison
  3. 3. found in eggs
  4. 5. found in fruits and vegetables
  5. 6. used to make coins
  6. 8. found in emeralds
  7. 10. used to disinfect swimming pools
  8. 14. used to make electric wires
  9. 16. used for advertising signs