THE HISTORY OF THE ATOM I am doing my project on the history of the atom. The atom was not just thought up overnight it took thousands of years of research and experimenting, but was finally finalized bty Dalton. Dalton was curious about many things but most of all he wondered how substances combined. He discovered that if you combine two substance, you got a new completely different substance. After years of experimenting he came …showed first 75 words of 332 total…

…showed last 75 words of 332 total…and is 1840 times heavier then an electron. The proton is what remains when a hydrogen atom is stripped of an electron. In 1932 Sir James Chadwick confirmed yet another subatomic particle, the neutron. Neutrons are subatomic particles with no charge. But there mass is nearly equal to the proton. In conclusion an atom is made of three parts electrons, protons and the neutron, all of these are equally important and a necessity to complete an atom.