Nuclear Physics

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Across
  1. 2. Isotopes have the same number of ________.
  2. 4. The time taken for the activity to half.
  3. 6. The collective term for protons and neutrons.
  4. 8. A light metal that can absorb beta radiation.
  5. 9. When two light nuclei merge to form a single heavier nucleus.
Down
  1. 1. An alternative material to lead for stopping gamma radiation.
  2. 3. Radiation released when a neutron turns into a proton.
  3. 5. When a nucleus of an atom splits into two or more smaller nuclei.
  4. 7. Radiation that travels the furthest in air.
  5. 10. Atom that has gained or lost electrons.