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He created the term Atom. Believed that your are able to divide something untill it cannot be broken down anymore.
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Disagreed with the Atomic Theory (Democritus). Believed in air, earth, water, fire and aether.
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Created the law of conservation (Mass cannot be created nor destroyed)
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Atmospheric pressure could push mercury up a tube to firgure. Came up with the barometer.
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Discovered the law of definitive proportions which states that in any compound the elements are present in a fixed proportion by weight.
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adopted Democritus' theory into the first modern atomic model.
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Credited for discovering the electron. Used the reasearch on a Cathode Ray Tubes.
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Electrons do not travel on a specific path or orbit.
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Set up the Gold Foil experiment, discovering there must be a positive centre of the foil. He called it a nucleus.
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Made the Cloud Model. Found out where we can predict where an electron will be.
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Proposed the "Uncertainty Relation" setting limits for how precisely the position and velocity of a particle.
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Found that Alpha particles have a neutral particle with about the same mass as a proton.