A general term covering a broad spectrum of physicochemical knowledge of the materials, processes, and operations used in the chemical process industries. It includes (1) basic phenomena such as activation, adsorption, oxidation, catalysis, corrosion, surface activity, polymerization, etc.; (2) the properties, behavior, and handling of industrial materials and products (plastics, textiles, coatings, soap, foods, metals, pharmaceuticals, etc.); and (3) their formulation, fabrication, and testing (compounding, extruding, molding, assembly, and the like).See Chemical Process Industry.