24.07.2012, 02:32
things are made out of atoms, and the structure contains mostly the same things for example, an atom contains a neutron, which has two protons, in the second layer it has 4 neautrols, 3rd layer 8 but to make it more confusing the third layer doesnt fill up once 4 has gone into the 3rd layer another 4 go into the 4th then it goes back to the third