character: Professor Johnson
topic: Phase Changes and Energy Transfer
grade: 12
subject: Chemistry
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character: Dr. Smith
topic: Thermodynamics and Phase Changes
grade: 12
subject: Chemistry
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character: Ms. Williams
topic: Energy Transfer in Chemical Reactions
grade: 12
subject: Chemistry
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character: Mr. Brown
topic: States of Matter and Energy Dynamics
grade: 12
subject: Chemistry
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