character: John Smith
topic: Chemical Reaction Rates
grade: 9
subject: Chemistry
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character: Emma Johnson
topic: Factors Affecting Reaction Rates
grade: 9
subject: Chemistry
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character: David Lee
topic: Collision Theory and Reaction Rates
grade: 9
subject: Chemistry
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character: Sophia Wang
topic: Catalysts in Chemical Reactions
grade: 9
subject: Chemistry
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