What term describes a mixture of chemical compounds that liquefies upon mixing?

• A. Emulsion
• B. Eutectic mixture
• C. Suspension
• D. Gel

Answer: (B)

A eutectic mixture is a special combination of solids whose melting point is lowered when the components are mixed, so at the eutectic composition the blend can melt at a temperature lower than either pure component. This means the mixture can become liquid upon heating to that eutectic temperature, or even exist as a liquid at temperatures where each component by itself would be solid. Emulsions are mixtures of immiscible liquids with droplets dispersed in another liquid, not about melting points. Suspensions have solid particles dispersed in a liquid and don’t inherently liquefy due to mixing. Gels are semi-solids with a network that traps liquid and don’t rely on melting behavior. Therefore, the term describing a mixture that liquefies upon mixing is a eutectic mixture.