character: Dr. Emily Greene
topic: Understanding Chemical Reactions
grade: 11
subject: Chemistry
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character: Professor John Smith
topic: Introduction to Reaction Rates
grade: 11
subject: Chemistry
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character: Ms. Lisa Chen
topic: Balancing Chemical Equations
grade: 11
subject: Chemistry
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character: Mr. Tom Johnson
topic: Types of Chemical Reactions
grade: 11
subject: Chemistry
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