The Development of the Modern Model of the Atom

The video explores the development of the atomic model, starting with Democritus' ancient theory of indivisible atoms. It progresses to J.J. Thomson's discovery of the electron using cathode rays, leading to the plum pudding model. Rutherford's gold foil experiment reveals the nuclear model with a dense nucleus. Bohr refines this by introducing electron shells with specific energy levels. Finally, Chadwick discovers the neutron, explaining discrepancies in atomic mass.

Who was the philosopher that first proposed the idea of atoms?

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What was Democritus's theory about matter?

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What significant discovery did J.J. Thomson make in 1897?

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Describe the plum pudding model of the atom.

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What experiment did Ernest Rutherford conduct to probe the nucleus of an atom?

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What was Neils Bohr's contribution to the atomic model?

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Who discovered the neutron and when?

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