Elements

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Across
  1. 2. Organic Chemistry
  2. 6. Bananas
  3. 9. Liquid metal, name of a planet
  4. 10. Lungs need this
  5. 11. Densest solid metal
  6. 14. Keeps pools clean
  7. 15. Toothpaste
Down
  1. 1. Salt
  2. 3. Most common element in the atmosphere
  3. 4. Formerly used as rat poison
  4. 5. A gas commonly mistaken for an extraterrestrial gem
  5. 7. Most commonly found in haematite
  6. 8. Fluorescence
  7. 12. Dense and soft metal
  8. 13. Hindenburg Disaster