character: Ms. Johnson
topic: Chemical Properties of Common Food Additives
grade: 11
subject: Chemistry
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character: Mr. Smith
topic: Effects of Additives on Food Quality
grade: 11
subject: Chemistry
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character: Dr. Lee
topic: Safety Regulations for Food Additives
grade: 11
subject: Chemistry
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character: Ms. Taylor
topic: Natural vs. Synthetic Food Additives
grade: 11
subject: Chemistry
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