Periodic Table

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Across
  1. 1. Which element is the most prevalent in living organisms?
  2. 5. Which element uses the symbol K?
  3. 6. Which element has an average mass of 10.81?
  4. 11. Which element is commonly used to keep pools clean?
  5. 13. Which element do we breathe in to sustain ourselves?
  6. 14. Which element has an average mass of 32.06
  7. 15. Which element is often used in liquid form to freeze various different things?
  8. 17. Which element has 4 protons?
  9. 18. Which element is in period 2, row 17?
  10. 19. Which element is prevalent in table salt?
Down
  1. 1. Which element do people say to have a lot of to have strong bones?
  2. 2. Which element has 15 protons?
  3. 3. Which element has the smallest mass?
  4. 4. Which element has an average mass of 28.08?
  5. 7. Which element uses the symbol Ar?
  6. 8. Which element is used in brightly glowing signs?
  7. 9. Which element uses the symbol Mg?
  8. 10. Which element has an average mass of 4?
  9. 12. Which element is often a major component in electric car batteries?
  10. 16. Which element has 13 protons?