character: Ms. Johnson
topic: Introduction to Light and Optics
grade: 9
subject: Chemistry
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character: Mr. Smith
topic: Properties of Light
grade: 9
subject: Chemistry
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character: Dr. Brown
topic: Refraction and Reflection
grade: 9
subject: Chemistry
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character: Mrs. Taylor
topic: Wave-Particle Duality
grade: 9
subject: Chemistry
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