First 18 Elements

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Across
  1. 5. Found in all computers
  2. 8. The outside of the sun
  3. 10. Makes dim blue vapor lamps
  4. 11. In party balloons
  5. 13. One ingredient to make diamonds
  6. 14. Makes bright red vapor lamps
  7. 15. In bleach
  8. 18. One ingredient to make emeralds
Down
  1. 1. Used for starting fires when camping
  2. 2. Crucial ingredient for homemade slime
  3. 3. One ingredient to make rubies
  4. 4. Can catch fire when exposed to water
  5. 6. Makes up the majority of air we breath
  6. 7. In toothpaste
  7. 9. Needed for plants to grow their roots
  8. 12. In rechargeable batteries
  9. 16. One part of the fire triangle
  10. 17. Main reason for rotten egg smell