Which term refers to a homogeneous mixture of two or more substances?

The term that refers to a homogeneous mixture of two or more substances is a solution. In a solution, the components are uniformly distributed at the molecular level, meaning that the solute (the substance being dissolved) is fully integrated within the solvent (the substance doing the dissolving). This results in a mixture that appears uniform throughout and does not exhibit the separate properties of its components.

For instance, when salt is dissolved in water, it forms a solution where the salt particles are dispersed evenly, and you cannot distinguish between the salt and water visually. This characteristic of homogeneity is what distinctly defines solutions in contrast with other mixtures like suspensions, colloids, or emulsions, which may exhibit different properties such as opacity, varying particle sizes, or separation upon standing.