character: Dr. Lee
topic: Chemical Reactions of Common Food Preservatives
grade: 11
subject: Chemistry
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character: Ms. Johnson
topic: Chemical Properties of Common Food Additives
grade: 11
subject: Chemistry
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character: Mr. Smith
topic: Understanding the Role of Antioxidants in Food Preservation
grade: 11
subject: Chemistry
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character: Prof. Davis
topic: The Chemistry Behind Artificial vs. Natural Preservatives
grade: 11
subject: Chemistry
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