character: Mr. Johnson
topic: Introduction to Mixtures and Their Properties
grade: 11
subject: Chemistry
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character: Ms. Smith
topic: Physical Properties of Substances in Chemistry
grade: 11
subject: Chemistry
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character: Dr. Lee
topic: Chemical Properties and Reactions in Mixtures
grade: 11
subject: Chemistry
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character: Mrs. Carter
topic: Techniques for Separating Mixtures
grade: 11
subject: Chemistry
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