character: Ms. Johnson
topic: The Periodic Table and Its Elements
grade: 9
subject: Chemistry
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character: Mr. Smith
topic: Understanding Atomic Structure
grade: 9
subject: Chemistry
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character: Mrs. Lee
topic: Chemical Bonds and Molecular Formulas
grade: 9
subject: Chemistry
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character: Dr. Patel
topic: Introduction to Chemical Reactions
grade: 9
subject: Chemistry
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