character: Mr. David Smith
topic: Understanding Atomic Structure and Periodicity
grade: 9
subject: Chemistry
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character: Ms. Emily Johnson
topic: Exploring the Periodic Table
grade: 9
subject: Chemistry
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character: Mr. John Miller
topic: Chemical Bonds and Atomic Interaction
grade: 9
subject: Chemistry
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character: Dr. Sarah Thompson
topic: The Importance of Electrons in Atomic Structure
grade: 9
subject: Chemistry
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