1. Ernest Rutherford's model replaced Thomson's.
2. Thomson recieved ten awards: Nobel Prize in Physics, Copley Medal, Hughes Medal, Royal Medal, Elliott Cressen medal, Franklin Medal, Adams Prize, IET Faraday Medal, Albert Medal, Smith's Prize for Examination Performance.
3. Rutherford and coworkers Hans Geiger and Ernest Marsden carried out their research in 1911.
4. An alpha particle is a helium nucleus discharged by some radioactive substances. It has a mass of four units and a positive charge of two.
5. Rutherford explianed that most alpha particles went straight through the foil by saying that it happended because is the atom is mostly and epty space. He said that a small number of alpha particles was being deflected at large angles and that there is a concentration of positive charge in the atom.
