character: Mr. John Thompson
topic: Properties of Solids
grade: 12
subject: Chemistry
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character: Ms. Sarah Johnson
topic: Crystal Lattices in Solids
grade: 12
subject: Chemistry
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character: Dr. Emily Adams
topic: Phase Changes and Solubility
grade: 12
subject: Chemistry
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character: Mr. David Brown
topic: Mechanical Properties of Materials
grade: 12
subject: Chemistry
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