Aqueous solution

The word aqueous (which comes from aqua) means pertaining to, related to, similar to, or dissolved in, water.

[1] The ability for ions to move freely through the solvent is a characteristic of an aqueous strong electrolyte solution.

[3] Nonelectrolytes are substances that dissolve in water yet maintain their molecular integrity (do not dissociate into ions).

Metathesis reactions are another term for double-displacement; that is, when a cation displaces to form an ionic bond with the other anion.

This reaction occurs when two aqueous strong electrolyte solutions mix and produce an insoluble solid, also known as a precipitate.

If the substance lacks the ability to dissolve in water, the molecules form a precipitate.