character: Mr. Johnson
topic: Introduction to the pH Scale and Indicators
grade: 11
subject: Chemistry
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character: Ms. Smith
topic: Understanding Acids and Bases
grade: 11
subject: Chemistry
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character: Dr. Brown
topic: The Role of pH in Chemical Reactions
grade: 11
subject: Chemistry
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character: Mrs. Davis
topic: Using pH Indicators in Experiments
grade: 11
subject: Chemistry
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