character: Mr. Atom
topic: Periodic Table Guide
grade: 11
subject: Chemistry
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character: Dr. Elementario
topic: Periodic Relationships
grade: 11
subject: Chemistry
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character: Professor ChemisTree
topic: Trends in Element Properties
grade: 11
subject: Chemistry
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character: Madame Molecule
topic: Understanding Chemical Properties
grade: 11
subject: Chemistry
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