Solvents are liquids in which other solids or liquid substances can be dissolved, that is to say break up in molecular terms without the chemical composition of the dissolved substances changing. Solvents are used, for example, to make solid binders liquid, to thin liquid binders and to clean materials. Solvents evaporate if they are exposed to air. The most well-known solvents for artists are water, white spirit and turpentine.