Table of elements

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Across
  1. 2. rocket fuel
  2. 4. glass ceramics and concrete
  3. 7. its used in soaps
  4. 8. in pools and water
  5. 9. makes food taste good
  6. 11. is used to make aircraft
  7. 12. like a shield
  8. 13. used for balloons
  9. 14. vital to survive
  10. 15. fireworks and medicine
  11. 18. its in toothpaste
Down
  1. 1. you breath it out
  2. 3. strong bones and teeth
  3. 5. a very light metal
  4. 6. used for explosive
  5. 7. matches and steel
  6. 10. to wrap sandwiches
  7. 16. our drive in volcano
  8. 17. bright lights
  9. 19. you need it to function