Nuclear Energy

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Across
  1. 3. the total number of protons and neutrons in a nucleus.
  2. 7. It is when a heavy nucleus splits spontaneously
  3. 11. species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behavior but with different atomic masses and physical properties
  4. 13. A helium nucleus emitted by some radioactive substances, originally regarded as a ray.
  5. 14. Its inside an atom
Down
  1. 1. It has a neutral charge
  2. 2. High-energy, short-wavelength, electromagnetic radiation emitted from the nucleus of an atom
  3. 4. the time taken for the radioactivity of a specified isotope fall to half its original value
  4. 5. a sequence of reactions where a reactive product or by-product causes additional reactions to take place
  5. 6. a subatomic particle with a positive electric charge
  6. 8. Atomic nuclei of low atomic number fuse to form a heavier nucleus with the release of energy.
  7. 9. a fast-moving electron emitted by radioactive decay of substances
  8. 10. the number of protons in the nucleus of an atom, which determines the chemical properties of an element and its place in the periodic table.
  9. 12. the release of energy from the decay of the nuclei of certain kinds of atoms and isotopes