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Plato introduced the theory of geometric shapes called atoms which broke down into elements.
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Democritus came up with the Idea that everything was made up of 'tiny bits'
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The alchemists were famous for trying to turn items into gold. This caused them to research the structure of ores and give us a greater understanding of the molecules that build them up
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Robert Boyle reasoned that atoms must exist because gas could be compressed.
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Antione said that matter is unable to be made or destroyed because something cannot be created from nothing so the reverse must be true.
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John Dalton proposed the idea of atoms in their name. He proposed that they were tiny indivisible pieces of elements, and that different elements would have different atoms.
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Amedeo Avogadro had a law that stated equal volumes of all gases at the same temperature and pressure, have the same number of atoms.
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The billiard ball model was the first, and simplest model. It was a simple model where the atom was just a plain round ball. It was made by John Dalton.
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JJ Thompson introduced the Plum Pudding model in which there was positively charged 'pudding' and negatively charged 'plum'
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The plum pudding model was created by JJ Thomson and had a positivly charged mass and small points of negatively charged "plum"
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Pierre and Marie Curie are famous for discovering the existence of radiation and the elements of polonium and radium.
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Dmitri Mendeleev Created the periodic table along with theorizing the properties of unknown elements.
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Albert Einstein was the first to calculate the size of an atom by using brownian motion
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Ernest Rutherford theorized that most of an atom was empty space, because of his experiment using gold foil and particle detecting sensors on either side.
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The solar system model was made by Niels Bohr and had orbits of electrons circling around a mas of protons and neutrons
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Henry Mosely concluded that the atomic number of an atom was how many positive charges it had.
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James Chadwick is famous for carrying out the experiment that allowed neutrons to be a confirmed concept.
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Niels Bohr proposed the idea of electron shells in which the farther away from the center of the atom you get the more energy is required
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Robert Millikan won the nobel prize for calculating the exact charge of an electron.
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The electron cloud model is the current model made by Erwin schrodinger in which there is positivly charged matter in the middle surrounded in a cloud of possible points for electrons
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Erwin Schrodinger found that electrons did not stay stationary, and in fact moved around extremely fast in orbitals around the nucleus of the atom.
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Werner Heisenburg created the uncertainty principle in which he stated that no atom has a definite position, momentum or trajectory.
