Chapter 13

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Across
  1. 2. carries a negative electrical charge
  2. 4. no charge
  3. 5. high energy particles
  4. 6. consists of two protons and two neutrons
  5. 8. 5730 for every half
  6. 10. carries a positive electrical charge
Down
  1. 1. an ejected electron from a nuclei
  2. 3. the changing of one chemical element into another
  3. 7. the rate of decay of a radioactive isotope
  4. 9. high frequency electromagnetic radiation