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400
Democritus B.C.
All matter throughout the universe solid or liquid living or non-living consists of an infinate of number of tiny indivisible particles which he called,"atomos- meaning uncuttable". (Https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=56f60323
Picture: http://the-history-of-the-atom.wikispaces.com/Democritus
e745304a6deba9eeba2c9245) -
400
Aristotle B.C.
He believed that diffrent things were made of different amounts. He also belived that things came from elements, and he thought atoms did not exist. (Https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=56f60323e745304a6deba9eeba2c9245 ) The-history-of-the-atom.wikispaces.com
Picture: http://elements.spiritalchemy.com/t3-Ch3.html -
Dalton
he belived matter cosits of indivisble atoms and atoms were arranged in different combinations to make different compunds.
(Https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=56f60323e745304a6deba9eeba2c9245 )
Picture: http://www.glogster.com/lucibubblegum/chemistry-project-dalton-s-atomic-model/g-6lv78l0pdj9qii0rpbafsa0 -
Thomson
He founded the electron. His famous model was known as the plum pudding model. Used gold foil to make his discovery. (Https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=56f60323e745304a6deba9eeba2c9245 )
Picture:http://en.wikipedia.org/wiki/Plum_pudding_model -
Rutherford
He belived atoms have a nucleus. Discoverd protons. (Https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=56f60323e745304a6deba9eeba2c9245 )
Picture: http://m.ztopics.com/Rutherford%20model/ -
Bohr
Nucleus is in the middle and the electrons are orbiting the nucleus. He shot a beam of alpha particles at a sheet of gold foil.(Https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=56f60323e745304a6deba9eeba2c9245 )
Picture: http://education.jlab.org/qa/atom_model.html -
Heisenberg and Schrodinger
Belived thast electron that electron were not really spinning in orbit, but were buzzing around the nucleus. (Https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=56f60323e745304a6deba9eeba2c9245 )
Picture: http://profmokeur.ca/chemistry/history_of_the_atom.htm
