Nuclear Energy

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Across
  1. 3. electromagnetic wave
  2. 5. Atomic weight
  3. 6. different atomic mass
  4. 8. electricity
  5. 10. stars
  6. 12. cause and effect
  7. 13. nuclear charge number
  8. 14. the time taken for something to halve its quantity
Down
  1. 1. atom-chipping
  2. 2. negative electric charge
  3. 4. helium-4
  4. 7. positive
  5. 9. core
  6. 11. neutral