periodic puzzle

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Across
  1. 2. cancelled trip (hint: explorer week)
  2. 5. pickle rhyme
  3. 6. oKay
  4. 10. squeaky pop
  5. 11. used to melt your lungs
  6. 13. where lanthanides begin
  7. 15. to light up your room
  8. 16. advertising lighting
  9. 18. last one
  10. 19. the lazy one (hint: greek)
Down
  1. 1. created with a dream
  2. 2. vertical
  3. 3. 2x+1=15 (hint: atomic mass)
  4. 4. 3g of Mg (hint: mol)
  5. 7. wizard of oz
  6. 8. si (hint: atomic symbol)
  7. 9. who, what, where...
  8. 12. ermmm (hint: rare earth metal)
  9. 14. anemia
  10. 17. horizontal