character: Mr. Johnson
topic: Introduction to Sodium and Its Properties
grade: 9
subject: Chemistry
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character: Dr. Smith
topic: Chemical Reactions of Alkali Metals
grade: 9
subject: Chemistry
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character: Ms. Patel
topic: Safety Measures in the Laboratory for Chemical Experiments
grade: 9
subject: Chemistry
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character: Professor Lee
topic: Understanding Reactivity in Chemistry: The Role of Electrons
grade: 9
subject: Chemistry
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