What is chemical engineering?

Chemical engineering applies chemistry, physics, and math to design processes that transform raw materials into products — fuels, plastics, pharmaceuticals, food, and chemicals — at industrial scale.

Exam tip: keep SI units consistent end-to-end, write the governing relation symbolically before substituting, and sanity-check magnitude and sign.

Understand the concept

Chemical engineers balance material and energy flows, select equipment (reactors, columns, heat exchangers), and ensure safety and environmental compliance. Scale-up from lab to plant is a core challenge.

Industries

Oil refining, polymers, fertilizers, batteries, semiconductors (process gases), and biotech manufacturing employ chemical engineers.

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See real chemical engineering careers

After exams and interviews, see how engineers actually built careers — milestones and decisions from people in the field.

Browse Chemical Engineering journeys Plan your path