character: Dmitri Mendeleev
topic: Periodic Table
grade: 11
subject: Chemistry
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character: Elements
topic: Periodic Trends and Heat of Reaction
grade: 11
subject: Chemistry
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character: Chemical Reactions
topic: Endothermic and Exothermic Processes
grade: 11
subject: Chemistry
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character: Avogadro
topic: Mole Concept in Reactions
grade: 11
subject: Chemistry
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