Chemical engineering entails the development of processes as well as the design and operation of industries in which materials undergo physical or chemical transformations. It is based on the concepts of chemistry, physics, and mathematics and is used in the process industries. Chemical engineers are in high demand across a broad range of industries and professions because it is one of the most broadly based engineering disciplines. Chemical engineers come up with new ways to transform raw materials and intermediate compounds into more usable forms. They create energy-efficient, ecologically friendly, and profitable processes and products.