Today in this modern world a new way of solubility has evolved, that makes insoluble substances like solids, soluble by heating them to a certain temperature. After which the solid louses its binding ability and turns into a liquid, now this liquid can be used to react with other liquids that way making the reaction of to non-reacting solids feasible in a test tube. The technique of making solids in to liquid cor reaction is called as Hydro-trophy.