The Atomic Theory In this report I will give a history on the development of the atomic theory. I will cover some of the most important dates in the development of atomic theory. An atom was first thought of by the Ancient Greeks who believed that matter was made of smaller particles called elements. The name they gave to these particles was the atom. In 1776 the man known as "The Father of Atomic Theory", John …showed first 75 words of 429 total…

…showed last 75 words of 429 total…to the discovery of nuclear fission. The neutron has a relative mass of one and has no negative or positive charge (neutral). Chadwick was strongly involved with British atomic bomb effort, during World War II. During the last to years of the war, Chadwick helped with the U.S. nuclear weapons research. The first atomic bomb was developed with the help of Chadwick, and because of this he earned the Nobel Prize for Physics in 1935.