Separating mixtures The substances in a mixture are relatively easy to separate, because they are not chemically joined to each other. The components of a mixture can be separated without chemical reactions We will look at five different ways of separating mixtures: The following terms are useful to know when thinking about separating mixtures. a solute is the substance that dissolves in a solvent. a solvent is the liquid in which a solute dissolves. a solution is a solute dissolved in a solvent. a soluble substance is one which will dissolve in a solvent. an insoluble substance is one which does not dissolve in a solvent. a filtrate is a filtered solution. a residue is a solid left behind after filtration. a distillate is a liquid produced by distillation. miscible liquids are ones that can mix together. immiscible liquids cannot be mixed together. evaporation is when a liquid is heated and changes state into a gas. condensation is when a gas cools and changes state into a liquid.