Nuclear energy

1234567891011121314
Across
  1. 4. one atom splits into smaller particles
  2. 7. positivly charged ion
  3. 10. two atoms collide and become helium and an extra atom
  4. 11. ping pong balls and mouse traps
  5. 12. how long it takes for half of something to decay
  6. 14. also the amount of protons
Down
  1. 1. a big particle and cannot penetrate skin
  2. 2. a nuetral charged particle
  3. 3. atom with a different amount of protons
  4. 5. a small single electron and can penetrate skin but is stopped by aluminum
  5. 6. decay process of gamma rays
  6. 8. atoms 83 and higer are this
  7. 9. below the atomic number and how heavy an element is
  8. 13. the center of an atom