Nuclear Crossword Puzzle!

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Across
  1. 3. the most dangerous type of radiation decay
  2. 5. the total number of protons and neutrons in the nucleus
  3. 6. an element with a different mass number that is on the periodic table
  4. 8. the process of emitting radiation
  5. 10. a nuclear reaction that requires two small nuclei to be bonded into one big atom
  6. 12. a reaction started by one event and continues to make more reactions
  7. 13. the total number of protons in an atom
  8. 14. the time it takes for half of a sample to decay
Down
  1. 1. a nuclear reaction that requires one heavy atom to be split into two atoms
  2. 2. a negatively charged electron
  3. 4. the safest type of radiation decay
  4. 7. a positively charged particle located in the nucleus
  5. 9. the positively charged region at the center of an atom
  6. 11. a negatively charged particle, located in the nucleus