character: Ms. Lee
topic: Introduction to Acid-Base Reactions
grade: 9
subject: Chemistry
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character: Mr. Kim
topic: Acid-Base Theories
grade: 9
subject: Chemistry
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character: Mrs. Wong
topic: pH Scale and Its Importance
grade: 9
subject: Chemistry
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character: Mr. Johnson
topic: Titration Techniques
grade: 9
subject: Chemistry
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