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They discovered that by breaking down the chemical proportion of the 4 basic elements of its period, fire, earth, wind and water eventually evolved into the periodic table
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He came up with the elements and argued that atoms could never produce the form of the world
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He proposed that atoms were uniformed, hard, solid, icompressible and moved in infinite numbers
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Proposed that elements are made of curpuscles that vary sizes and types can organize themselves in groups that represent different chemical substances
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He proved the conservation of matter
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He proposed the atomic theory, which stated that all matter was composed of atoms, indisivle and indestructible building blocks
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He proposed that gases such as hydrogen, nitrogen and oxygen were composed of two atoms
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He desvised the clasification of the chemical elements and they are arragend in base on their atomic weight
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He discovered the electron and proposed a model for the structure of an atom
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Discovered strongly elements polonium and radium, which occur in minerals made of uranium
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He proved the existence of atoms mathimatecaly
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He tested an experiment called oil drop, where he discorvered the charge of an electron
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He discovered atoms have a small charged nucleous that is surrounded by empty space and tiny atoms circle them
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He found
out that the number of x-ray radiaton has a mathematical relationship to an element's atomic number -
He proposed the hydrogen atom, which stated that electron move around their nucleous, only in an orbit, and if they are moved to a lower energy orbit the difference is going to be sent as a radiation
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He devised the quanzitation of an hydrogen atom's energy levels that appeared in Neils Bohr atomic model could be calculated from Schrondinager's equation
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He formulated quantum mechanics in terms of matrices
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He discovered the neutron