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Democritus is widely known for the formantion of the atomic theory. This theory slightly resembles the results from atomic research in the 19th century.
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Appointed as commisioner of the Royal Gunpowder and Salpeter Administration. Largest contribution was learning that combustion and respiration had to do with a part of the air called oxygen. Lavoisier concluded that water was made of both oxygen and hydrogen atoms.
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Dalton studied atoms through the study of meteorology. He published his first book in 1793 called Meteorological Observations
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Faraday developed the laws of electrolysis, which was the splitting of molecules using electricity.
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Proposed by John Dalton in 1803. In this model, Dalton included the laws of multiple proportions and definite composition. (http://www.charpan.com/chemistry-the-atomic-models-and-chemistry)
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Worked with Pierre and Marie Curie on the discovery of radioactivity. Accidentally contributed through the use of X-rays.
(http://www.nobelprize.org/nobel_prizes/physics/laureates/1903/becquerel-facts.html) -
Joseph discovered the electron through a series of experiments. He also suggested a model of the atom where it is a sphere. This is called the Plum Pudding Model.
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Planck's quantam theory was used by scientists such as Einstein and Bohr. Bohr used this theory to create an accurate model of the atom.
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Married to Marie Curie. Discovered, with his wife, the atoms of the elements radium and polonium. (9http://www.nobelprize.org/nobel_prizes/physics/laureates/1903/pierre-curie-facts.html)
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Married to French Physicist Pierre Curie. Created methods with her husband for the seperation of radium from radioactivity.
(http://www.nobelprize.org/nobel_prizes/physics/laureates/1903/marie-curie-bio.html) -
Millikan made discoveries in physics, optics, and electricity. Millikan also found the charge of an electron through the "falling-drop" method.
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Rutherford first taught schoolboys before he became a scientist. He eventually recieved a Nobel Piece Prize for his scientific efforts in 1908.
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Steiner, along with Otto Hahn, discovered the uranium atom can be split. This split can only happen when a multitude of neutrons attack the atom. (http://www.chemheritage.org/discover/online-resources/chemistry-in-history/themes/atomic-and-nuclear-structure/hahn-meitner-strassman.aspx)
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Hahn was awarded the Nobel Prize for the discovery of the fission of heavy nuclei. Also, he, along with Lise Steiner, discovered a uranium atom can be split. (http://www.chemheritage.org/discover/online-resources/chemistry-in-history/themes/atomic-and-nuclear-structure/hahn-meitner-strassman.aspx)
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Einstein not only worked in the field of chemistry, but also in physics and medicine. He also worked on an interpretation on the quantam theory.
(http://www.nobelprize.org/nobel_prizes/physics/laureates/1921/einstein-bio.html) -
Bohr proposed a theory in 1913 of the shape of a hydrogen atom. This theory was based around the quantam theory and states that electrons move around the nucleus in orbits.
(http://www.nobelprize.org/nobel_prizes/physics/laureates/1922/bohr-facts.html) -
Earned the Nobel Prize for formulating a wave equation for an electron's energy levels.
(http://atomictimeline.net/index.php) -
Chadwick earned a Nobel Prize through his doscovery of the neutron, a neutral particle with the same mass as a proton.
(http://www.nobelprize.org/nobel_prizes/physics/laureates/1935/chadwick-facts.html) -
Broglie's theory gave an explanation to the movement of electrons. This theory eventually gained him a Nobel Piece Prize in 1929.
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Proposed by J.J. Thomson in 1897. This model proposed that the atom was a mass of positive charges with negative charges inside of it. The name was given since the negative charges seemed like raisins in pudding. (http://www.charpan.com/chemistry-the-atomic-models-and-chemistry)
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This model was developed by both Ernest Rutherford and Niels Bohr. This model proved Thomson's theory wrong through Rutherford's Gold Foil Experiment. This model is the more frequently used model of the atom. (http://www.iun.edu/~cpanhd/C101webnotes/modern-atomic-theory/rutherford-model.html)
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Seaborg served as chairman of the Atomic Energy Comission from 1961 to 1971. Seaborg also combined six transuraniam elements and suggested a change in the format of the periodic table. (http://atomictimeline.net/index.php)
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This model depicts the electrons not moving in a fixed orbit, but rather within certain boundaries. These boundaries create clouds that the electrons move around in.
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This model was developed by Erwin Schrodinger. In order to find an electron in a certain position, Schrodinger would use mathematical equations. Contrary to the Bohr Model, this model does not exactly describe the path of an electron.
(http://www.abcte.org/files/previews/chemistry/s1_p6.html) -
One of the most important of the Greek philosophers. Most of his writings included topics such as writing, theater, logic, poetry, and science.
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