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1st person to investigate basic principles, the orgins of the subtances of matter, and founder of school of natural physcoloy
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He came up with the word "Atom"
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He believed that all subtances were made up of fire, water, air, earth
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He helped out the Atomic Theory
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Dalton's Atomic Theory
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dicovered that elements could be radioactive but didnt know why
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discovered the electron
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Found the charge of an indiviual electrons
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Discovered the nuecleus and proton
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Electrons traveled in orbit
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Found Isotopes
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Quantum Mechanical Model of Atom
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discoverd the Nuetron
