Afra's Crossword: Periodic Table

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Across
  1. 5. Pure substance that can't be broken down
  2. 8. Atomic Number #: 20
  3. 9. Particle that's positively charged
  4. 10. Atomic #: 25
  5. 13. Name of table's row (horizontal)
  6. 14. Atomic #: 90
  7. 17. Atomic Mass: 268
  8. 19. Name of table's column (vertical)
Down
  1. 1. Atomic #: 47
  2. 2. Atomic Mass: 47.88
  3. 3. Atomic #: 5
  4. 4. Mass/ Number of protons + neutrons in a nucleus
  5. 6. Atomic #: 12
  6. 7. Atomic Mass: 222
  7. 11. Atomic #: 7
  8. 12. Particle that's negatively charged
  9. 15. Element we breath in
  10. 16. Atomic #: 92
  11. 18. Particle that is neutral
  12. 19. Atomic Mass: 196.97