character: Ms. React
topic: Types of Chemical Reactions
grade: 9
subject: Science
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character: Mr. Chemist
topic: Balancing Chemical Equations
grade: 9
subject: Science
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character: Dr. Molecule
topic: The Law of Conservation of Mass
grade: 9
subject: Science
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character: Professor Reaction
topic: Exothermic and Endothermic Reactions
grade: 9
subject: Science
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