character: Mr. Carter
topic: Comparative Reactivity of Elements
grade: 12
subject: Chemistry
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character: Ms. Johnson
topic: Periodic Trends in Reactivity
grade: 12
subject: Chemistry
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character: Dr. Smith
topic: Alkali Metals and Their Reactivity
grade: 12
subject: Chemistry
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character: Mr. Lee
topic: Group Trends in Nonmetals
grade: 12
subject: Chemistry
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