character: Mr. Johnson
topic: Properties of Transition Metals
grade: 9
subject: Chemistry
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character: Ms. Smith
topic: Understanding Chemical Bonds
grade: 9
subject: Chemistry
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character: Dr. Lee
topic: Introduction to Periodic Table of Elements
grade: 9
subject: Chemistry
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character: Mrs. Davis
topic: Characteristics of Metals, Nonmetals, and Metalloids
grade: 9
subject: Chemistry
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