Question

what happens when a solid is dissolved into a liquid?
solid particles float toward the surface layer of liquid particles.
solid particles sink down toward the bottom layer of liquid particles.
solid particles become evenly dispersed among liquid particles.
solid particles become suspended in the middle of liquid particles.

Explanation:

When a solid dissolves in a liquid, the solid particles (solute) break into smaller particles and get evenly dispersed among the liquid particles (solvent) to form a solution. Option A is incorrect as floating to the surface is not dissolution. Option B is incorrect as sinking to the bottom is suspension or sedimentation, not dissolution. Option D is incorrect as "suspended in the middle" is more like a suspension, while dissolution involves even dispersion. Option C describes the even dispersion in dissolution.

Answer:

C. Solid particles become evenly dispersed among liquid particles.