character: Mr. Smith
topic: Periodic Table and its Trends
grade: 9
subject: Chemistry
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character: Ms. Johnson
topic: Understanding Atomic Structure
grade: 9
subject: Chemistry
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character: Mr. Lee
topic: Chemical Bonding and Molecular Structure
grade: 9
subject: Chemistry
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character: Mrs. Brown
topic: Introduction to Chemical Reactions
grade: 9
subject: Chemistry
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