character: Mr. Johnson
topic: Understanding Chemical Hazards and Safety Equipment
grade: 12
subject: Physics
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character: Ms. Smith
topic: Laboratory Safety Procedures
grade: 12
subject: Physics
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character: Dr. Lee
topic: Introduction to Chemical Reactions
grade: 12
subject: Physics
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character: Mrs. Garcia
topic: Effect of Chemicals on Physical Properties
grade: 12
subject: Physics
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