11.1 Terminology

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Across
  1. 2. spontaneous loss of particle or gamma radiation
  2. 4. atoms that spontaneously emit subatomic particles and/or energy
  3. 7. hollow metal cylinder filled with uranium
  4. 9. energy in an atom
  5. 11. simplest form of matter
  6. 13. the time it takes for half of the radioactive isotopes in a sample to decay
Down
  1. 1. atoms that have the same number of protons but different number of netrons
  2. 3. substance composed of all the same type of atoms
  3. 5. rod that absorbs neutrons and slows fission
  4. 6. reaction that occurs when a neutron strikes the nucleus of an atom and breaks it
  5. 8. radiation that consists of electrons
  6. 10. radiation that consists of two protons and two neutrons
  7. 12. high energy electromagnetic waves