An emulsion is a _____ system in which one liquid is dispersed in another as small droplets.

An emulsion is a _____ system in which one liquid is dispersed in another as small droplets.

• A. one-phase
• B. two-phase
• C. three-phase
• D. multi-phase

Answer: (B)

An emulsion is defined by the presence of droplets of one liquid dispersed in another immiscible liquid, creating two distinct phases: the dispersed droplets and the surrounding continuous liquid. That makes it a two-phase system. If there were only a single homogeneous phase, there would be no droplets or interfaces, so it wouldn’t be an emulsion. Systems with more than two distinct liquids or phases (three-phase or multi-phase) describe more complex mixtures than a standard emulsion. In practice, common emulsions include oil droplets in water or water droplets in oil, often stabilized by emulsifiers that reduce interfacial tension and protect droplets.

An emulsion is defined by the presence of droplets of one liquid dispersed in another immiscible liquid, creating two distinct phases: the dispersed droplets and the surrounding continuous liquid. That makes it a two-phase system. If there were only a single homogeneous phase, there would be no droplets or interfaces, so it wouldn’t be an emulsion. Systems with more than two distinct liquids or phases (three-phase or multi-phase) describe more complex mixtures than a standard emulsion. In practice, common emulsions include oil droplets in water or water droplets in oil, often stabilized by emulsifiers that reduce interfacial tension and protect droplets.