character: Dr. John Smith
topic: Periodic Trends and Atomic Structure
grade: 12
subject: Chemistry
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character: Marie Curie
topic: Nuclear Chemistry and Atomic Models
grade: 12
subject: Chemistry
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character: Dmitri Mendeleev
topic: Development of the Periodic Table
grade: 12
subject: Chemistry
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character: Niels Bohr
topic: Bohr Model of the Atom
grade: 12
subject: Chemistry
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