character: Mr. David Smith
topic: Properties of Metals and Insulators
grade: 9
subject: Chemistry
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character: Ms. Sarah Johnson
topic: Conductivity in Metals
grade: 9
subject: Chemistry
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character: Mr. James Li
topic: Difference Between Conductors and Insulators
grade: 9
subject: Chemistry
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character: Dr. Emily White
topic: Applications of Insulators in Electrical Systems
grade: 9
subject: Chemistry
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