Periodic Table

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Across
  1. 4. You breathe this element
  2. 8. This element is made by boiling urine
  3. 11. This is what you get when you are awarded second place
  4. 13. This element is the only halogen in group 5
  5. 15. This element is named after the planet Pluto
  6. 17. This element's atomic number is 80
  7. 18. This element is found in salt
  8. 20. This element is found in milk
Down
  1. 1. This is the heaviest element in group 3
  2. 2. This element's atomic symbol in C
  3. 3. This element has 40 protons
  4. 5. Pennies are made of this element
  5. 6. Too much exposure to this element can cause berylliosis
  6. 7. This element makes bright colors
  7. 9. This element is the lightest element on the periodic table
  8. 10. This element is what cans are made of
  9. 12. This element is a metal that is soft enough to cut with a knife
  10. 14. This element is in group 6 and period 10
  11. 16. This element’s atomic symbol is Au
  12. 19. This element is the heaviest element on the periodic table