Answer: Food preservatives.
- A Artificial sweeteners
- B Edible colours
- C Antioxidants for rubber
- D Food preservatives
Correct answer: D. Food preservatives
Explanation: Food preservatives are substances added to food to prevent spoilage caused by microbial growth.
The hydrophobic hydrocarbon tail of each soap/detergent molecule dissolves into an oily dirt droplet, while the hydrophilic (ionic) head stays in the surrounding water - trapping the grease inside a micelle that rinses away with water.
Concept context
Drugs and how they interact with biological targets, chemicals in food, and cleansing agents (soaps and detergents) - chemistry applied directly to daily life and healthcare.