character: Dr. Johnson
topic: Introduction to Light and Matter Interaction
grade: 9
subject: Chemistry
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character: Professor Smith
topic: Electromagnetic Spectrum Overview
grade: 9
subject: Chemistry
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character: Ms. Lee
topic: Fundamentals of Photons and Wave-Particle Duality
grade: 9
subject: Chemistry
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character: Mr. Brown
topic: Chemical Reactions and Energy Transfer
grade: 9
subject: Chemistry
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