Question

choose three characteristics of a solution. the particles are small enough that they cannot be filtered. the color of the solute darkens as it dissolves. it is highly reactive with metalloids. it is stable and does not settle out as a solid. it is uniform, with solute that is evenly distributed. it forms an alloy of at least three metals.

Explanation:

A solution is a homogeneous mixture. Its particles are very small (nanometer - sized) and cannot be filtered. It is stable, meaning the solute won't settle out over time. The solute is evenly distributed throughout the solvent, making the mixture uniform. The color change as solute dissolves is not a general characteristic, reactivity with metalloids is not a defining feature, and forming an alloy of metals is not related to the general concept of a solution.

Answer:

The particles are small enough that they cannot be filtered.
It is stable and does not settle out as a solid.
It is uniform, with solute that is evenly distributed.