The first twenty elements. By Samantha

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Across
  1. 2. a lot of it in cow dairy products
  2. 7. seventh most reactive of all elements
  3. 9. the name was created by Antoine Lavoisier
  4. 11. forms many useful compounds eg. Baking soda
  5. 12. used in cans,foil, etc.
  6. 14. discovered by boiling urine
  7. 15. has the lowest melting point among all the elements
  8. 17. most reactive of all elements
  9. 18. used in pencil lead
  10. 19. used as an ignition source
Down
  1. 1. used in thermal pools
  2. 2. used to keep pools clean
  3. 3. used to make special glasses and ceramics
  4. 4. there is a lot of it in bananas
  5. 5. discovered by sir William Ramsay
  6. 6. once known as glucinum
  7. 8. ingredient in plasma
  8. 10. Raw fueL that stars use to burn energy
  9. 13. discovered in 1772
  10. 16. produced by heating sand