Kritika's crossword puzzle

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Across
  1. 2. 7 of them in the periodic table (used to seperate the elements)
  2. 5. good conductor of electricity.
  3. 6. has three proton
  4. 8. atomic symbol Rn
  5. 9. has a negative charge
  6. 11. has 80
  7. 13. atomic number 1
  8. 14. has a positive charge
  9. 16. number/ number of proton in the element
  10. 19. 18 of them in the periodic table (how the elements are seperated)
  11. 21. atomic symbol of Ag
Down
  1. 1. atomic number of 2
  2. 3. atomic mass of 32.06
  3. 4. one of a class of substances that cannot be separated into simpler substances by chemical means.
  4. 7. is neutral
  5. 10. is made up of two elements
  6. 12. letter that represents the element
  7. 15. has 8 proton
  8. 17. has 29 proton
  9. 18. atomic symbol Au
  10. 20. atomis mass of 65.39