character: Dr. Lee
topic: Electron Shells and Their Influence on Reactivity
grade: 9
subject: Chemistry
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character: Professor Adams
topic: Valence Electrons and Chemical Bonds
grade: 9
subject: Chemistry
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character: Ms. Thompson
topic: Atomic Structure and Periodic Trends
grade: 9
subject: Chemistry
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character: Mr. Johnson
topic: The Role of Electrons in Chemical Reactions
grade: 9
subject: Chemistry
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