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  • Created by: Olivia
  • Created on: 19-03-14 18:03

The Nucleus:

  • Its in the middle of the atom
  • It contains protons and neutrons
  • It has a positive charge because of the protons
  • Almost the whole mass of the atom is concentrated in the nucleus
  • But size wise its tiny compared to the rest of the atom.

The electrons:

  • They move around the nucleus in energy levels called shells
  • They are negitavely charged
  • They're tiny, but they cover a lot of space
  • The size of their orbits determines how big the atom is
  • They…


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