8m periodic table :)

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Across
  1. 4. used in the healthcare industry
  2. 7. group 7 period 5
  3. 10. fills party balloons
  4. 11. middle block of the period table
  5. 12. Ag
  6. 13. an element that displays properties of both a metal and a non-metal
  7. 14. reddish brown colour
Down
  1. 1. used by the body to keep cells healthy
  2. 2. W
  3. 3. lightest element in the periodic table
  4. 5. used in traffic lights and signs
  5. 6. Na
  6. 8. group 7 period 3
  7. 9. silvery, white solid at room temperature