In what type of mixture do particles remain evenly distributed and do not settle out over time?

A solution is a type of mixture where the components are uniformly distributed at the molecular level, and the solute particles do not settle out over time. In a solution, one substance (the solute) is completely dissolved in another substance (the solvent), resulting in a homogeneous mixture.

The particles in a solution are generally ions or molecules that are so small they cannot be seen and do not scatter light, making solutions transparent. An everyday example of a solution is saltwater, where the salt is fully dissolved in water, creating a stable and consistent mixture.

In contrast, a colloid consists of larger particles that remain dispersed but can scatter light, making them appear cloudy. A suspension contains larger particles that can eventually settle out when left to stand, resulting in a non-homogeneous mixture. An amalgam is a specific type of alloy containing mercury and is less relevant in the context of mixtures that maintain a consistent distribution of particles.

Thus, the unique characteristics of a solution, notably its stability and the size of its particles, affirm its role in maintaining an even distribution where components do not settle out over time.