character: Dr. Martinez
topic: Chemical Properties of pH Indicators
grade: 9
subject: Chemistry
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character: Dr. Lee
topic: Acid-Base Chemistry
grade: 9
subject: Chemistry
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character: Ms. Taylor
topic: Understanding pH and Its Measurement
grade: 9
subject: Chemistry
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character: Mr. Kim
topic: Applications of pH Indicators in Chemistry
grade: 9
subject: Chemistry
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