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April 1, 2024
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Atomic History Timeline
Atualizado 20 out 2018
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Julie Foy
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John Dalton's Atomic Theory- atoms can be rearranged chemically and combined to form compounds.
J.J Thomson discovers the electron using the Cathode Ray Tube Experiment
J.J Thomson's Plum Pudding Model suggests that an atom is a ball of positive energy with electrons floating in it
Antoine Lavoisier formulates the Law of Conservation of Mass- the mass of an object remains constant even if the matter changes form or chemically reacts to create a new product.
Erwin Schrodinger's Electron Cloud Model developed through Bohr's work and mathematical equations
Robert Millikan's Oil Drop Experiment is developed through his apparatus and his equation 1.602 x 10^-19
James Chadwick proved the existence of neutrons through research and the assistance of Rutherford
Neils Bohr's Planetary Model is published through the study of the hydrogen atom's electron orbit
Ernest Rutherford's Gold Foil Experiment proves the existence of the nucleus and that most of the atom is empty space. Becomes the Rutherford Model.
Períodos
Democritus studied atoms and was the first person to propose their existence
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