Why does the volume of a solution not increase when you add a solute?

When a solute is added to a solvent, it occupies spaces between the solvent molecules without significantly increasing the overall volume. This is because the solute particles intermingle with the solvent molecules, leading to a more efficient packing arrangement. As a result, the increase in volume is minimal, and the system remains close to the original volume of the solvent. Thus, the change in volume is often negligible in practical terms.