character: Professor Matter
topic: Properties of Solids
grade: 9
subject: Physics
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character: Mr. Solid
topic: Structure of Crystals
grade: 9
subject: Physics
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character: Dr. Elastic
topic: Elasticity in Materials
grade: 9
subject: Physics
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character: Ms. Thermal
topic: Thermal Conductivity of Solids
grade: 9
subject: Physics
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