character: Mr. John Lee
topic: The Impact of Grain Boundaries on Metal Strength
grade: 11
subject: Chemistry
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character: Ms. Sarah Kim
topic: The Role of Alloying Elements in Improving Metal Properties
grade: 11
subject: Chemistry
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character: Dr. Emily Wong
topic: Crystal Structures and their Influence on Material Hardness
grade: 11
subject: Chemistry
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character: Prof. Alan Chen
topic: Understanding Dislocations and Stress in Metals
grade: 11
subject: Chemistry
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