character: John
topic: Understanding Combustion in Engines
grade: 11
subject: Chemistry
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character: Emily
topic: Chemical Reactions and Energy Changes
grade: 11
subject: Chemistry
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character: Michael
topic: The Role of Fuels in Combustion
grade: 11
subject: Chemistry
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character: Sophia
topic: Types of Combustion: Complete and Incomplete
grade: 11
subject: Chemistry
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