character: Jöns Jacob Berzelius
topic: Berzelius and the Birth of Modern Chemistry
grade: 12
subject: Chemistry
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character: Antoine Lavoisier
topic: Foundational Contributions to Chemistry
grade: 12
subject: Chemistry
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character: John Dalton
topic: Atomic Theory Development
grade: 12
subject: Chemistry
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character: Dmitri Mendeleev
topic: Periodic Table and Element Classification
grade: 12
subject: Chemistry
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