character: Dr. Anna Lee
topic: Activation Energy and Catalysts
grade: 9
subject: Chemistry
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character: Dr. Emily Carter
topic: Understanding Chemical Reactions
grade: 9
subject: Chemistry
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character: Professor Mark Johnson
topic: The Role of Enzymes as Catalysts
grade: 9
subject: Chemistry
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character: Ms. Rachel Smith
topic: Factors Affecting Reaction Rates
grade: 9
subject: Chemistry
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