character: Professor Smith
topic: Phase Changes and Thermodynamics
grade: 9
subject: Chemistry
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character: Dr. Johnson
topic: States of Matter and Phase Transitions
grade: 9
subject: Chemistry
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character: Ms. Davis
topic: Energy Changes in Chemical Reactions
grade: 9
subject: Chemistry
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character: Mr. Brown
topic: Understanding Enthalpy and Heat Transfer
grade: 9
subject: Chemistry
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