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All things are made up of form and matter which can only be changed with growth, decay, or motion.
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All objects are made up of little indestructible and indivisble things called atoms.
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All elements are created from indestructible particles called atoms which are different from other element's atoms. Atoms are the same in same elements though. His theory also introduced compounds, which are made when different elements combine. The final part of his theory was that when atoms of different elements are joined, seperated, or rearranged chemical reactions result.
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English physicist who invented the Cathode Ray. This ray resulted in the Thompson/Plum Pudding atomic model.
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Conducted a gold foil method.
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Found the charge of an electron to be slightly negative.
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Discovereed isotopes as a result of sending ionized Neon through a magnetic and electric field.
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Came to the conclusion that atoms have a heavily charged nucleus with the electrons at a distance circling around it.
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Studied the stability of the atom. He determined that all forms of energy that were particle and ones that were wavelengths, establishing the wave-length duality of nature.
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He came up with the Quantum mechanical atomic model which shows the orbitals around the nucleus in constant motion, equidistant from each other and at different angles.
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He realized that there are many things about atoms which cannot be exactly determined or calculated. This is mainly directed at determining an electrons location and velocity at the same time.
