character: Dr. Johnson
topic: Understanding Activation Energy
grade: 9
subject: Chemistry
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character: Professor Smith
topic: Chemical Reactions and Energy Changes
grade: 9
subject: Chemistry
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character: Ms. Patel
topic: The Role of Catalysts in Activation Energy
grade: 9
subject: Chemistry
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character: Mr. Lee
topic: Factors Influencing Reaction Rates
grade: 9
subject: Chemistry
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