periodic table

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Across
  1. 4. this element has two of it in water
  2. 7. Penny's are made of this
  3. 9. this lines coins to protect them
  4. 10. this makes neon signs glow
  5. 11. you can get Minecraft bars of this. it is shiny.
  6. 12. you breathe this
  7. 14. there s a valley in California which this is named after
  8. 15. there is a cube named after this
  9. 16. you can buy nice watches with this on it
  10. 17. if you reach 1 million subs on YouTube you get a -------- award
  11. 18. this is named after a European country
  12. 19. this is the main component in salt
  13. 20. you can find this in bananas
Down
  1. 1. this is used to stop superman
  2. 2. these are the columns in a periodic table
  3. 3. this is in thermometers
  4. 5. trees take this
  5. 6. this is named after a state
  6. 8. these are the rows on a periodic table
  7. 13. this is named after a planet
  8. 16. this metal melts in your hand