What are emlsions?

Answer 1

One kind of emulsion is a mixture of oil, water, and an emulsifier which keeps the oil and water from separating.

Answer 2

Emulsions are mixtures of two or more immiscible liquids, where one liquid is dispersed in the other as tiny droplets. Common examples include salad dressings and mayonnaise, where oil is dispersed in water with the help of an emulsifying agent to form a stable mixture. Emulsions can be temporary or stable depending on the ingredients and method of preparation.