What is the term for a solid that forms when two liquids are mixed together? A. a reactant B. an energy source C. a precipitate D. a solute

A precipitate is an insoluble solid that forms when two solutions are combined and react chemically.

In chemistry, the solid that forms when two liquids are mixed together is called a precipitate. Thus, the answer is letter C. The precipitate is insoluble solids formed in the process called precipitation in liquid. They often emerge as suspension in the solution.