Nuclear Energy

1234567891011121314
Across
  1. 2. 2 small nuclei go into one
  2. 7. least penetrating particle
  3. 8. most penetrating particle
  4. 9. 1 nuclei split into two
  5. 11. number on top of an element
  6. 12. Atoms with the same number of protons but different numbers of neutrons
  7. 14. same mass as a proton with no electric charge
Down
  1. 1. Protons+neutron=
  2. 3. The thing in the middle of an atom
  3. 4. Where an element is bad for you it can cause cancer if exposed for to long
  4. 5. one thing that leads to another and then they all start going off
  5. 6. how long it takes to decompose into half
  6. 10. has a positive charge
  7. 13. 2 most penetrating particle