what property must a substance have if you want to use the substance to make an aqueous solution

A liquid that mixes with water?

In order to make an aqueous solution, a substance must have the property of solubility in water. This means that the substance can dissolve in water to form a homogeneous mixture where the particles of the substance are evenly distributed throughout the water. Solubility is influenced by factors such as temperature, pressure, and the nature of the substance itself.

To determine if a substance is soluble in water, you can refer to solubility tables or guidelines that provide information about the solubility of various substances. These tables usually indicate whether a substance is soluble, insoluble, or partially soluble in water. It's important to note that solubility can vary widely depending on the specific conditions (e.g. temperature, concentration).

If a substance is described as soluble, it means that it dissolves readily in water. Insoluble substances, on the other hand, do not dissolve in water or have very low solubility. Partially soluble substances dissolve to some extent but not completely.

When selecting a substance to make an aqueous solution, it is important to consider its solubility, as it determines whether the substance will effectively dissolve in water and form a stable solution.