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First person to investigate basic principles of atoms.
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Created the "Cutting the Cheese" theory by cutting an object till it couldn't get any smaller, and said the smallest part would be an atom.
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Didn't believe in the atomic theory, but rather the elements of earth, fire, wind and water.
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Contributed to the idea that atoms are held together by attractions or forces.
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Atomic Theory Experiment
1) All matter is made up of tiny particles called atoms
2) All atoms of a given element are alike but are different from the atoms of any other element
3) Compounds are formedwhen atoms of different elements combbine in fixed proportions
4) A chemival reaction involes a rearrangement of atoms, not a change in the atoms themselves -
Came up with the Uranium Experiment and discovered radio activity.
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Discovered the electron and created the Plum-pudding model.
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Came up with the Oil Drip Experiment and found the charge of individual electrons.
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Came up with the Gold-Foil Experiment and theorized that the atom was mostly empty space and that all positive charge was found in the nucleus, ended up discovering the nucleus and the proton.
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Performed by Rutherford and was used to discover the proton and nucleus.
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Discovered isotopes with the experiment-mass spectograph.
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Came up with the Quantum Mechanical model by taking Bohr's model and adding mathematical equations to determine that electrons don't have an exact path.
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Discovered the neutron.
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Came up with the Primitive hydrogen model.