element crossword!

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Across
  1. 5. was discovered in 1807
  2. 6. colorless gas odorless
  3. 7. atomic number is 19
  4. 10. was discovered in 1775
  5. 12. part of halogens
  6. 14. most abundant element on earth
Down
  1. 1. discovered by sir Humphrey Davy
  2. 2. 26 neutrons and 22 protons
  3. 3. it's atomic number is 29
  4. 4. luster is dull
  5. 8. solid blue with grey metallic luster
  6. 9. we have it in a lot of our foods.
  7. 11. cannot be cut with a knife
  8. 13. first metal to be discovered