What is emulsion in terms of liquid mixtures?

Emulsion refers to a mixture of two or more immiscible liquids, where one liquid is dispersed in the other in the form of small droplets. The correct answer highlights that an emulsion is not just any mixture but specifically a stable combination of non-soluble liquids.

For an emulsion to form, an emulsifying agent is often required to stabilize the mixture, preventing the liquids from separating. Common examples of emulsions include oil and water mixtures, where the oil is dispersed in the water. The stability of these mixtures is crucial in various applications, such as food products (like mayonnaise) and cosmetics.

Unlike homogeneous solutions, which consist of a single phase where the components are fully dissolved in one another, emulsions contain distinct phases since the liquids involved are not soluble. This characteristic differentiates emulsions from solutions and other types of mixtures, making the definition provided in the correct choice accurate and relevant.