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character: Emma
topic: Energy Changes in Reactions
grade: 9
subject: Chemistry
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character: Emma
topic: Thermodynamics in Chemical Reactions
grade: 9
subject: Chemistry
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character: Emma
topic: Enthalpy and Exothermic/Endothermic Reactions
grade: 9
subject: Chemistry
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character: Emma
topic: Activation Energy and Catalysts
grade: 9
subject: Chemistry
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