History of the Atom + Gold Foil experiment
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12 Terms
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What did Democritus discover?
The atom
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What did Aristole propose?
He proposed that there are 4 basic elements
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What did John Dalton create?
Billard Ball model
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What did J.J Tomson create and discover?
Plum Pudding model & the electron
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What did Ernest Rutherford discover and do?
The Nucleus and the Proton and the Gold Foil experiment
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What did Niels Bohr discover?
Electron Orbits
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What did James Chadwick discover?
The Neutron
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What is fired at the gold foil?
A stream of tiny positively charged particles
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How thick is gold foil?
2000 atoms
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What do most charged "bullets" do?
Pass through the gold atoms in the sheet without changing course
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What do the rest of the charged "bullets" do?
Bounce away from the gold sheet
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What do positive charges do to other positive charges?
Repel