science

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Across
  1. 2. Element used in nuclear reactors
  2. 3. Element with the symbol 'Ag'
  3. 5. Element with the symbol 'Ca'
  4. 10. Element used in making glass
  5. 12. Element with the symbol 'O'
  6. 15. Element with the symbol 'Na'
  7. 16. Element with the symbol 'Al'
  8. 19. The lightest noble gas
  9. 20. Element used to disinfect water
  10. 21. The most abundant gas in Earth's atmosphere
  11. 23. The heaviest naturally occurring element
  12. 25. Element with the symbol 'Au'
Down
  1. 1. Element with the symbol 'K'
  2. 4. Element with the symbol 'F'
  3. 6. Element with the symbol 'P'
  4. 7. Element used in making batteries
  5. 8. Element with the symbol 'B'
  6. 9. Element used in pencils
  7. 11. Element with the symbol 'Mg'
  8. 13. Element with the symbol 'Ne'
  9. 14. Element with the symbol 'C'
  10. 17. Element with the symbol 'Hg'
  11. 18. Element used in fireworks for red color
  12. 22. Element with the symbol 'Sn'
  13. 24. Element with the symbol 'Fe'