character: Mr. Taylor
topic: pH Scale and Acid Rain Measurement
grade: 11
subject: Chemistry
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character: Mr. Jones
topic: Introduction to Acids and Bases
grade: 11
subject: Chemistry
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character: Ms. Smith
topic: Environmental Impact of Acid Rain
grade: 11
subject: Chemistry
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character: Dr. Brown
topic: Chemical Reactions and pH Levels
grade: 11
subject: Chemistry
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