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WGU (tg) Chemistry Contributors

QuestionAnswer
Greeks First suggested the atom Elements comprised of Earth, Air, Fire, Water.
Dalton Atomic Theory (mostly right) except for elements are identical (they are not).
Rutherford Gold Foil Experiment Atom has positive center(nucleus)with electrons moving around the nucleus. Planetary Model of the Atom
Thompson Plum pudding model Cathode Ray Experiment Determined charge to mass ratio of electon. All elements have electrons.
Millikan Oil Drop experiment calculated mass of electron
Bohr Planetary Model of the Atom Electrons move in circular orbits
de Broglie Electron has wave properties
Lavoisier Law of Conservation of Mass
Created by: bxrsnrotts