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350
Aristotle(BC)
He's a man that believed that all matter was of "The 4 Elements" which are fire,earth,air, & water.
He did not have proof to support his theory.
https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=56f60323e745304a6deba9eeba2c9245 -
400
Democritus(BC)
He discover that atoms were uncuttable.Democitus imaged if you cut something in half and continue to do it you will get to something you can't cut.
https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=56f60323e745304a6deba9eeba2c9245 -
Dalton
He said matter consists of indivisible atoms and that atoms arramge in different combinations to wake different compounds.
https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=56f60323e745304a6deba9eeba2c9245 -
Thomson
His theory proposed a model of atom which is known as plum pudding model. Observation from his experiment that showed him that particles have positive and negative charges.
https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=56f60323e745304a6deba9eeba2c9245 -
Rutherford
He discoverd the Nuclear model.He though that the nucleus was positive and the eletrons were around it.
https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=56f60323e745304a6deba9eeba2c9245 -
Bohr
He discovered the Bohr Model. Bohr belived that the electrons were like plants around the sungoing around the nucleus.
https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=56f60323e745304a6deba9eeba2c9245 -
Heisenberg and Schrodinger
He discovere Quantuam Mechanical Model. Schrodinger showed that eletorns werelike hyper active flies and had a particular path.
https://www.gaggle.net/gaggleVideoProxy.do?op=view&v=56f60323e745304a6deba9eeba2c9245
