character: Mr. Energy
topic: Energy Changes in Chemical Reactions
grade: 9
subject: Chemistry
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character: Dr. Reacto
topic: Exothermic and Endothermic Reactions
grade: 9
subject: Chemistry
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character: Professor Catalyst
topic: Role of Catalysts in Energy Changes
grade: 9
subject: Chemistry
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character: Ms. Equilibrium
topic: Energy Conservation in Chemical Processes
grade: 9
subject: Chemistry
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