character: John Dalton
topic: Early Atomic Theory
grade: 11
subject: Chemistry
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character: Democritus
topic: Philosophical Atomism
grade: 11
subject: Chemistry
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character: John Thomson
topic: Plum Pudding Model
grade: 11
subject: Chemistry
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character: Ernest Rutherford
topic: Nuclear Model of the Atom
grade: 11
subject: Chemistry
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