Periodic table

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Across
  1. 2. used to melt your lungs
  2. 5. wizard of oz
  3. 8. created with a dream
  4. 10. the lazy one(hint:greek)
  5. 13. 3g of Mg (hints:mol)
  6. 15. highlighter
  7. 17. oKay
  8. 18. dad(hint:chinese)
  9. 20. used in optical fibres
Down
  1. 1. horizontal
  2. 3. 2x+1=15(hint:atomic mass)
  3. 4. to light up your room
  4. 6. squeaky pop
  5. 7. pickle rhyme
  6. 9. si (hint: not silicon)
  7. 11. last element
  8. 12. vertical
  9. 14. where, what, when…
  10. 16. country(hint:europe)
  11. 19. rust