character: Mr. David Brown
topic: Mechanical Properties of Materials
grade: 12
subject: Chemistry
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character: Ms. Sarah Johnson
topic: Material Strength and Elasticity
grade: 12
subject: Chemistry
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character: Dr. Emily White
topic: Types of Stress and Strain in Materials
grade: 12
subject: Chemistry
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character: Mr. Michael Smith
topic: Thermal Properties and Conductivity of Materials
grade: 12
subject: Chemistry
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