Chemical engineering majors learn to apply the concepts of chemistry, biochemistry and biological science, and mathematics to issues related with the design, development, safety, and operation and control of systems and processes involving chemical or biological reactions, and the transfer of mass, momentum, and energy from one location to another. Chemical engineers make important contributions to the following industries: biomedical, environmental, energy and fuels, fertilizer, food processing, paper, pharmaceuticals, polymers, semiconductors, and synthetic fibers.