character: Ms. Thompson
topic: Radioactivity and Half-life
grade: 9
subject: Chemistry
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character: Dr. Adams
topic: Nuclear Reactions and Decay Processes
grade: 9
subject: Chemistry
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character: Mr. Smith
topic: Isotopes and Their Applications
grade: 9
subject: Chemistry
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character: Ms. Lee
topic: Radiation Types and Their Properties
grade: 9
subject: Chemistry
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