character: Ms. Carter
topic: Chemical Reactions in Water Filtration
grade: 11
subject: Chemistry
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character: Mr. Johnson
topic: Physical and Chemical Changes in Water Samples
grade: 11
subject: Chemistry
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character: Dr. Lee
topic: Chemical Processes in Water Purification Techniques
grade: 11
subject: Chemistry
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character: Ms. Rodriguez
topic: The Role of Chemical Reactions in Wastewater Treatment
grade: 11
subject: Chemistry
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