What term describes a substance that speeds up a chemical reaction without being consumed by it?

Explanation

A catalyst speeds up the rate of a chemical reaction by lowering the activation energy required, without being permanently changed or used up itself. Enzymes in the human body act as biological catalysts, enabling essential reactions like digestion to occur quickly at body temperature. Catalytic converters in vehicles use metal catalysts to convert harmful exhaust gases into less harmful substances. Explore more Everyday Science MCQs on mcqstutor to keep practicing.