character: Ms. Lee
topic: Electronegativity and Periodic Trends
grade: 9
subject: Chemistry
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character: Mr. Smith
topic: Atomic Structure and Periodicity
grade: 9
subject: Chemistry
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character: Ms. Johnson
topic: Chemical Bonding and Electronegativity
grade: 9
subject: Chemistry
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character: Dr. Brown
topic: Periodic Table Trends and Properties
grade: 9
subject: Chemistry
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