Chemical engineering involves designing and developing processes for manufacturing and transforming materials through chemical or physical changes. Chemical engineers work in a variety of sectors including chemical, energy, pharmaceutical, biotechnology, and environmental industries. They devise procedures for production, transportation, and processing of materials through testing and scaling up designs. The curriculum for chemical engineering focuses on courses in engineering fundamentals, thermodynamics, kinetics, transport phenomena, and process design based on chemistry, physics, and biology to give engineers a strong understanding of the scientific principles behind technological processes.