What property would describe a solution that has only one set of properties?

A solution characterized by having only one set of properties is defined as a homogeneous mixture. In a homogeneous mixture, the components are uniformly distributed, meaning that every part of the mixture has the same composition and properties throughout. This uniformity ensures that any sample taken from the mixture will exhibit the same characteristics as the entire mixture, such as color, density, and concentration.

In practical terms, homogeneous mixtures include examples like saltwater or air, where the individual components (salt and water, or the various gases in air) are not distinguishable at a glance and fully combine to exhibit a single, consistent property.

Heterogeneous properties, in contrast, describe mixtures where different substances are visible and can be distinguished. Chemical and physical properties are broader categories that pertain to specific characteristics of substances rather than the uniformity of mixtures. Thus, the definition of a homogeneous mixture aligns perfectly with the idea of having one set of properties, making it the correct answer.