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https://goo.gl/AHz482

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Rutherfords Gold Foil Experiment (Discovery of the Atomic Nucleus)

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He was the fist person to start doing experiment
His theory was that nothing was smaller than an atom and they couldn't be cut in half
(Notes)
https://goo.gl/ikcLSv

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Due to the discovery of the atomic nuclei by Rutherford, Chadwick proposed the idea of a "neutron". https://goo.gl/74IZoF
https://goo.gl/0iFL0B

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This couple founded two elements. The elements are polonium and radium. They are radioactive.
https://goo.gl/Xo3Mpt
https://goo.gl/Qa3kFs

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In 1714 he published his law of define proportions/ constant composition. This means that the compound will stay in it's same proportion/composition because of the mass.
https://goo.gl/NL8bSV
https://goo.gl/RgbH9p

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The electron cloud was proposed by Erwin Schrodinger and he said that scientist could only make educated guesses on where the electron is.
https://goo.gl/NB67t
https://goo.gl/ACNCkM

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He used Rutherford's atomic model to make his own that was more improved
He Discover that electrons orbit around the nucleus in different paths
https://goo.gl/luJQNz
https://goo.gl/CrirD9

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He Made a gun and it shot alpha particles
He discovered the nucleus
He said that must of the atoms was negative
(Notes)
https://goo.gl/7Dbcqp

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Provided the first hint at elections. He made a statement saying that there were things smaller than an atom. Which he later called Corpuscles (electrons). He made a Cathode ray tube.
(Notes)
https://goo.gl/r3UQWQ

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Democritis theory: All matter in the world is made up of atomos (atoms)
Aristotle's theory: All matter in the world is made up of the 4 elements; Air, Fire, Water, and Earth
Because Aristotle theory was more popular and recent, more people agreed with him.
(Notes)
https://goo.gl/J6eQWA