character: Michael Faraday
topic: Historical Contributions to Chemistry
grade: 9
subject: Chemistry
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character: Joseph Priestley
topic: Discovery of Oxygen
grade: 9
subject: Chemistry
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character: John Dalton
topic: Atomic Theory Development
grade: 9
subject: Chemistry
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character: Dmitri Mendeleev
topic: Periodic Table Organization
grade: 9
subject: Chemistry
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