A homogeneous mixture of more than one substance in one phase is called which term?

• A. Suspension
• B. Colloid
• C. Solution
• D. Emulsion

Answer: (C)

A solution is a homogeneous mixture in which substances are uniformly distributed at the molecular level within a single phase. In a solution, the solute dissolves in the solvent, giving a uniform composition throughout the sample—for example, salt or sugar dissolved in water. Because everything is evenly mixed at the microscopic level, you can’t distinguish the components and there’s only one phase present.

This differs from a suspension, where larger particles are dispersed in a liquid and can settle over time, creating two visible phases. A colloid has particles that are intermediate in size and remain dispersed, often showing the Tyndall effect but not forming a truly uniform single phase. An emulsion is a type of colloid where droplets of one liquid are dispersed in another immiscible liquid, also not a single homogeneous phase. Hence, the term that best describes a homogeneous mixture of more than one substance in one phase is a solution.