character: Dr. Samuel Lee
topic: Importance of pH Measurement in Food Quality
grade: 11
subject: Chemistry
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character: Dr. Emily Chen
topic: The Role of Acidity in Food Preservation
grade: 11
subject: Chemistry
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character: Professor Mark Johnson
topic: Chemical Reactions in Food and Their pH Dependence
grade: 11
subject: Chemistry
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character: Chef Maria Gonzalez
topic: Taste and Texture: The Impact of pH Levels in Cooking
grade: 11
subject: Chemistry
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