Which statement best defines a solution?

Which statement best defines a solution?

• A. A mixture of immiscible substances that separate
• B. A mixture of two solvents and solute
• C. Solute + Solvent mixtures of two or more kinds of molecules, evenly dispersed
• D. A pure substance with a single element

Answer: (C)

A solution is a homogeneous mixture where a solute is dissolved in a solvent, and the resulting blend is uniform at the molecular level. This means the components are evenly dispersed so you can’t see individual particles or layers. The best statement captures that idea by describing a solute plus a solvent with two or more kinds of molecules that are evenly dispersed, which reflects the uniform composition of a solution. The other descriptions miss this essential aspect: an immiscible mixture separates into layers, which is not a solution; a pure substance with a single element isn’t a mixture at all; and mentioning two solvents plus a solute doesn’t emphasize the uniform dispersion that defines a solution.

A solution is a homogeneous mixture where a solute is dissolved in a solvent, and the resulting blend is uniform at the molecular level. This means the components are evenly dispersed so you can’t see individual particles or layers. The best statement captures that idea by describing a solute plus a solvent with two or more kinds of molecules that are evenly dispersed, which reflects the uniform composition of a solution.

The other descriptions miss this essential aspect: an immiscible mixture separates into layers, which is not a solution; a pure substance with a single element isn’t a mixture at all; and mentioning two solvents plus a solute doesn’t emphasize the uniform dispersion that defines a solution.