character: Ms. Johnson
topic: Understanding Atomic Structure
grade: 9
subject: Chemistry
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character: Mr. Smith
topic: The Bohr Model of the Atom
grade: 9
subject: Chemistry
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character: Dr. Lee
topic: Electron Configuration
grade: 9
subject: Chemistry
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character: Ms. Davis
topic: Isotopes and Atomic Mass
grade: 9
subject: Chemistry
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