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He thought mater made particles. Particles could not be cut. He calld it an atom. He thought atoms were indivisble, Atom comes from the word atomos. Atomos is greek for indivisible.
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He thought they were solid sphere. All substances are made of atoms. Atoms of the same element are exactly alike. Atoms join with other atoms.
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Small Atoms are inside of small particles so they can join together.
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Atoms are soft bllobs of matter. Atoms can pass right throught gold on a straight line. And he cslled his model Rutherfords model.
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He wascalled the Father of Quantam theory because he proposed that electrons move around the nucleus in certains paths or energy levels. Bohr made up the "Bohr Planetary Model."
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Discovered the existence of isotopes through the use of a mass spectrograph.
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They made the modern day atomc theory and there model was the electron clouds theory. Schrodinger identified the electron cloud as the propable location of moving particles.
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Chadwick proved the existance of a neutron. He also discoverd a particle within the nucleus that has a mass similar to that of a proton. And he didnt have a model.
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He disagreed with Democritus's ideas. He thought could never end up with a paricle that could be cut. For a long time most people thought he was right because of the strong influence he had on them.
