character: Mrs. Lee
topic: Density and its Relation to Mass and Volume
grade: 9
subject: Chemistry
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character: Mr. Smith
topic: Understanding the Concept of Matter
grade: 9
subject: Chemistry
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character: Ms. Johnson
topic: Properties of Liquids and Solids
grade: 9
subject: Chemistry
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character: Dr. Adams
topic: Calculating Density: Formulas and Applications
grade: 9
subject: Chemistry
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