Nuclear Chemistry Vocabulary

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Across
  1. 3. rearrangement of DNA when hit by radiation
  2. 4. determines which chemical element it is
  3. 6. unstable atomic nucleus loses energy by radiation
  4. 8. atoms of the same element with different numbers of neutrons
  5. 11. particle: consist of two protons and two neutrons
  6. 12. two smaller nuclei combine to form a larger nucleus
  7. 16. particle: high speed electron emitted by the radioactive decay of an atomic nucleus
  8. 17. positively charged central core of an atom
  9. 18. Measure in rems
  10. 20. smallest particle of an element
  11. 21. number: Number of protons in the nucleus
Down
  1. 1. rays: have no mass and no electric charge
  2. 2. referring to the particles that make up the nucleus
  3. 5. number: Number of protons and neutrons in the nucleus of an atom
  4. 7. circles around the nucleus
  5. 9. an atom or group of atoms that has a positive or negative charge
  6. 10. simplest form of matter that is a unique set of properties
  7. 13. composed of protons and neutrons
  8. 14. splits into two smaller nuclei by a neutron
  9. 15. life: amount of time it takes for half of a radioactive element to transform into something else
  10. 19. a subatomic particle with no charge