What best describes a suspension?

A suspension is best described as a mixture in which solid particles are dispersed throughout a liquid but are not dissolved. In a suspension, the solid particles are typically larger than those in a solution, and they can settle out over time if left undisturbed, meaning they are not in a stable state in the liquid. This characteristic differentiates a suspension from solutions, where the solute is dissolved evenly throughout the solvent, resulting in a homogeneous mixture.

In the context of the options, a mixture of water and non-dissolved material effectively captures the essence of a suspension, which emphasizes the presence of particles that remain distinct and separate from the liquid. These particles can have a range of sizes and often require agitation to remain evenly distributed.

Other options involve concepts related to mixtures and solutions. A homogeneous mixture refers to a solution where components are evenly distributed, which is not the case for suspensions. High acidity pertains specifically to the pH of a solution, which does not define a suspension. The concentration of solids in a liquid is relevant, but it does not capture the specific nature of how those solids interact with the liquid in a suspension as described in the correct choice. Thus, the definition of a mixture of water and non-dissolved material accurately and