character: Dmitri Mendeleev
topic: Mendeleev's Periodic Table
grade: 12
subject: Chemistry
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character: John Dalton
topic: Atomic Theory
grade: 12
subject: Chemistry
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character: Marie Curie
topic: Radioactivity and Chemical Interactions
grade: 12
subject: Chemistry
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character: Gilbert Lewis
topic: Chemical Bonds and Interactions
grade: 12
subject: Chemistry
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