character: Mr. Smith
topic: The Role of Acids and Bases in Canning
grade: 11
subject: Chemistry
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character: Mr. Johnson
topic: Acid-Base Reactions in Preserving Foods
grade: 11
subject: Chemistry
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character: Ms. Davis
topic: Chemical Properties of Vinegar in Food Preservation
grade: 11
subject: Chemistry
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character: Dr. Lee
topic: pH Levels and Their Effects on Food Safety
grade: 11
subject: Chemistry
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