2. The Atomic Structure

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Atoms are made up of PROTONSNEUTRONS and ELECTRONS:

(http://www.bbc.co.uk/schools/gcsebitesize/science/images/19_1_atoms__isotopes.gif)

  • The nucleus contains the protons and the neutrons, this is where most of the mass is concentrated.
  • The actual size of the nucleus is super tiny compared with the rest of the atom.
  • The electrons orbit the nucleus in shells
  • Between the shells and the nucleus is empty space

(http://1.bp.blogspot.com/-xcWh2LHEry8/TYiBBnSkzRI/AAAAAAAAARI/lgMn9T0vPmQ/s320/MassChargeTable.gif)

The atomic number is how many protons and electrons there are in

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