Nuclear Energy

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Across
  1. 2. atoms of an element with a differing number of neutrons in it's nucleus.
  2. 4. the center of an atom; contains protons and neutrons.
  3. 6. nucleus split apart, releasing energy; used in nuclear power plants.
  4. 9. the mass of the total number of protons and neutrons in a nucleus.
  5. 10. the time required for 1/2 of atoms of a radioactive substance to decay
  6. 11. the number of protons in a nucleus.
  7. 12. 2 protons and 2 neutrons bonded together and emitted from the nucleus during radioactive decay
  8. 13. the emission of radiation by an unstable nucleus.
  9. 14. a subatomic particle found in the nucleus of an atom; has a positive charge
Down
  1. 1. nuclei fuse together to form a heavier nucleus; requires large amounts of heat; the reaction that occurs in the sun.
  2. 3. a subatomic particle that has no/neutral charge and is in the nucleus of an atom.
  3. 5. when gamma rays and energy are emitted from an unstable nucleus.
  4. 7. a chemical or nuclear reaction producing energy or products that trigger other reactions.
  5. 8. an electron emitted from the nucleus during radioactive decay.