The Atom

1. Discovery

1.1. J.J. Thompson discovered sub atomic particles in 1897

1.2. Rutherford's Gold Foil Experiments (1908-1913) led to discovery of the nucleus

1.3. Sir James Chadwick discovered the neutron in 1932

2. Its Makeup

2.1. Proton

2.2. Neutron

2.3. Electron

3. Atomic model

3.1. plum pudding model proposed by J.J. Thompson

3.2. Bohr model proposed by Neils Bohr and is the modern representation of the atom used today

3.3. Rutherford model-similar to Bohr model but does not properly portray the behavior of electrons