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Democritus lived a long time ago, nd he is the one to discover THE atom.
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It was around the time Democritus made his discory, that Plato cntributed to the tomic theory and discovered Empedocles, the 5th atomic type in the theory
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Robert Boyle was an Anglo-Irish man who contributed to the atomic theory by making his own law (Boyle's law) about pressure, volume & gas!
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Antoine-Laurent de Lavoisier helped the atomic theory by discovering lots of stuff about oxygen and even naming the element.
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The billiard ball model was created by John Dalton, explaining the atom
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John Dalton was an English chemist who created the atomic theory saying "All matter was composed of atoms indivisible and indestructible building blocks"
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Amedeo was an Italian scientist who discovered that equal volumes of gases when they're the same temperature that contain the same number of molecules
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Dmitri was a Russian chemist who discovered that all the chemical elements are arranged in the atomic weight
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JJ Thompson (like Chadwich) was a british physicist who diescovered that atoms had negatively charged electrons, or particles
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The Plum pudding model was created by JJ Thompson explaining electrons
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Albert Einstein was a very well known, very smart man who proved mathematically that atoms exist
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Noble prize winner for Physicist, Robert Millikan discovered the magnitude of electron's charge in the atom.
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Ernest was a New Zealand physicist who discovered that the atom is mostly empty space
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Neils Bohr was a Danish physicist who discovered that electrons move around the nucleus
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Herny was an English physicist who contributed to the atomic theory by making the atomic number is equal to the number of positive electrons, or particles, on the periodic table.
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Not to get confused with the actual solar system, this model shows off all of the different parts of the atom.
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Erwin was an Australia-Irish physicist who discovery about the hydrogen atom's energy levels.
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The Electron cloud model is a model of an atom, showing off its elements...
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Werner was a German physicist whop formulated the quantum mechanics
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James was a british physicist who made a very important discovery regarding the theory. He discovered the atom
