Understanding Mixture Types

Mixtures are broadly classified into two types based on composition uniformity:

• Homogeneous Mixtures: These have a uniform composition throughout. The components are evenly distributed and cannot be visually distinguished.
• Heterogeneous Mixtures: These have a non-uniform composition. Components are not evenly distributed and can often be visually distinguished or separate over time.

Analyzing Solutions and Suspensions

Let's examine the options provided:

• Solution: A true solution is a homogeneous mixture. For example, when salt (solute) dissolves completely in water (solvent), the resulting mixture is uniform. The particles are too small to be seen or to settle out.
• Suspension: A suspension is a heterogeneous mixture. Particles in a suspension (like sand in water or muddy water) are larger, remain dispersed for a while, but will eventually settle out if left undisturbed. The composition is not uniform.

Based on these definitions, a suspension fits the description of a heterogeneous mixture because its components are not uniformly distributed and can separate.