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ATOM - Coggle Diagram
ATOM
ATOMIC MODELS
Billiard Ball Model
In the early 1800's, John Dalton proposed the idea of atoms as solid, hard spheres, like billiard balls. He proposed that all elements are composed of atoms.
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Plum Pudding Model
Joseph John Thomson proposed the Plum Pudding Model. It shows that electrons are small negative charges attached to a positively charged medium.
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Nuclear Model
Ernest Rutherford overtuned Thomson's model with his gold-foil experiment, in which he illustrated that the atom has a tiny, massive nucleus. The nuclear model shows that the mass of an atom is concentrated on its nucleus, which is made up of tightly bonded positively and neutrally charged subatomic particles
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Planetary Model
Niel Bohr proposed a model of an atom that was somehow similar to the Solar System. The Planetary Model shows the negatively charged electrons orbit a small, positively charged nucleus.
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Electron Cloud Model
Erwin Schrodinger proposed the Electron Cloud Model. Each orbital around the nucleus of the atom resembles a fuzzy cloud around the nucleus.
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