character: Mr. Johnson
topic: Chemical Reactions
grade: 12
subject: Chemistry
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character: Ms. Smith
topic: Sodium Reactivity Demonstration
grade: 12
subject: Chemistry
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character: Dr. Lee
topic: Reactivity of Metals with Water
grade: 12
subject: Chemistry
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character: Mrs. Davis
topic: Safety in Chemical Reactions
grade: 12
subject: Chemistry
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