Periodic Table!

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Across
  1. 3. based around how many control you visit.
  2. 6. in gasoline
  3. 7. the room was solid from 8.30 and the full sign was flashing red
  4. 9. it is found in Australia, Brazil, India, Russia and the United States.
  5. 11. atom was in use in atomic clocks.
  6. 12. alloys by the eastern zhou period.
  7. 13. is obtained commercially as bromide and chloride
  8. 15. it is found everywhere.
Down
  1. 1. plants produce it
  2. 2. at a temperature just above absolute zero would be useful.
  3. 3. in the blood.
  4. 4. nitride.
  5. 5. bonded layers that form, providing the driving force for the process.
  6. 6. valproate had received some bad press recently, which she felt was mostly undeserved.
  7. 8. metal hydride.
  8. 10. amalgam some years ago.
  9. 14. gate onto a cobbled road.