character: Mr. Lee
topic: Periodic Table and Element Groups
grade: 9
subject: Chemistry
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character: Mrs. Smith
topic: Understanding Atomic Structure
grade: 9
subject: Chemistry
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character: Mr. Johnson
topic: Chemical Bonding and Molecules
grade: 9
subject: Chemistry
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character: Ms. Patel
topic: Periodic Trends and Properties
grade: 9
subject: Chemistry
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