What is typically true of solutions compared to suspensions?

Solutions are defined by the uniform distribution of solute particles that are dissolved in a solvent. This means that the particles in a solution are typically at a molecular or ionic level, making them much smaller than those found in suspensions. Because of their small size and complete dissolution, solutions are stable and do not settle over time.

When we refer to the filtering aspect, solutions cannot be filtered to separate their components because the solute particles are too small to be caught by filter media, unlike suspensions, where larger particles can be trapped. This characteristic of solutions highlights their homogeneity and stability, reinforcing why they cannot be effectively filtered.

In contrast, the other characteristics often associated with solutions—such as being colored or having a tendency to settle—do not apply; solutions can be clear, and they do not settle out over time like suspensions do. Thus, the assertion that solutions cannot be filtered is a defining characteristic that accurately distinguishes them from suspensions.