What are two ways that some solutes form ions in solution?

A solution forms when one substance dissolves in another. The substance that dissolves is called the solute. For example, polar solvents dissolve polar solutes, and nonpolar solvents dissolve nonpolar solutes. Ionic solutes separate into individual ions when they dissolve.

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods