character: Mr. Johnson
topic: Acids and Bases in Solutions
grade: 9
subject: Chemistry
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character: Ms. Smith
topic: pH Scale and its Importance
grade: 9
subject: Chemistry
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character: Dr. Lee
topic: Neutralization Reactions
grade: 9
subject: Chemistry
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character: Mr. Garcia
topic: Properties of Acids and Bases
grade: 9
subject: Chemistry
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