character: John Dalton
topic: Atomic Theory
grade: 11
subject: Chemistry
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character: Dmitri Mendeleev
topic: Periodic Table Development
grade: 11
subject: Chemistry
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character: J.J. Thompson
topic: Electron Discovery
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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