Chemistry elements quiz

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Across
  1. 3. electropositive
  2. 5. alluminium
  3. 6. spectroscopy
  4. 9. gas
  5. 11. gold
  6. 13. nordic
  7. 15. lazy
  8. 16. gitd
  9. 18. laughing
  10. 19. rotten
Down
  1. 1. ekaboron
  2. 2. 272
  3. 4. scientists
  4. 7. bullet
  5. 8. berkeley
  6. 10. European
  7. 12. haloradio
  8. 14. father
  9. 17. higher