Which term describes the capacity of a substance to dissolve in another?

• A. Conductivity
• B. Volume
• C. Solubility
• D. Density

Answer: (C)

This question is about how much of a substance can dissolve in another under certain conditions. That property is called solubility. Solubility describes the capacity of a substance (the solute) to dissolve in a solvent, and it often depends on temperature or pressure. When a solution contains as much dissolved substance as possible at a given temperature, it’s at saturation.

Other terms describe different ideas: conductivity is about how well a solution can carry an electric current, volume is the amount of space something occupies, and density is the mass per unit volume of a substance. So solubility is the best fit for describing the dissolution capacity.