character: Mr. Johnson
topic: Rate of Reaction: The Effect of Concentration on Reaction Rates
grade: 9
subject: Chemistry
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character: Mr. Johnson
topic: Understanding Activation Energy and Its Role in Reaction Rates
grade: 9
subject: Chemistry
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character: Mr. Johnson
topic: Factors Affecting Reaction Rates: Temperature and Catalysts
grade: 9
subject: Chemistry
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character: Mr. Johnson
topic: Conducting Experiments to Measure Reaction Rates
grade: 9
subject: Chemistry
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