Radiation 101!

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Across
  1. 2. light particle
  2. 4. negative charge
  3. 5. losing energy
  4. 8. positive charge
  5. 9. rays
Down
  1. 1. antiparticles to electrons
  2. 3. neutral charge
  3. 6. two protons, two neutrons
  4. 7. neutrons/protons changing