Periodic table

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Across
  1. 5. A red/brown liquid from Group 7
  2. 6. This gas produces a red light when an electric current flows through it.
  3. 9. Name of group 1
  4. 10. Produced when Group 1/2 metals react with Group 7 halogens
Down
  1. 1. Fizzes as it floats on water.
  2. 2. This element is needed to survive
  3. 3. The first element of the periodic table
  4. 4. Group 2 metal that does not react wtih water or steam
  5. 7. Name of group 7
  6. 8. Element that has atomic number 20