Lastly, compounds are made by atoms that combine with each other due to the electrical attraction between charged atoms which would eventually form the particles of a compound.
Sir Joseph John Thompson was born on December 18, 1856 in Chatham Hill around Manchester and died on August 30, 1940 in Cambridge, Cambridge shire. This English physicist received the Nobel Prize for Physics in 1906 and received education from Owen’s College now named the University of Manchester.
He later on gained a scholarship at Trinity College and would later undertake experimental research at the Cavendish Laboratory. His contributions to the atomic theory involved the electron but later on his findings revised by Earnest Rutherford.
JJ Thompson‘s contribution to the atomic theory includes how all atoms consist of electrons which are negatively charged. These electrons have a minuscule mass and can also be removed or increased to create charged atoms.
When describing the atom, Thompson states that all the other parts of the atom excluding electrons are positive charge and that electrons are embedded randomly in the atom making it visually look like a raisin bun.
Ernest, Baron Rutherford of Nelson was born on August 30, 1871 in Spring Grove, New Zealand and died on October 19, 1937 in Cambridge, Cambridge shire. He was an amazing physicist who won the Nobel prize in 1908 for chemistry and attended many universities and colleges such as Canterbury College in Christchurch, University of Cambridge and McGill University in Montreal.