Asubstance that accelerates the rate of a chemical reaction is called a(an)
a. catalyst.
b. lipid.
c. molecule.
d. element.

A substance that accelerates the rate of chemical reaction is called a catalyst. It serves as an alternative pathway for the reaction product. The increase of rate of chemical reaction is because catalyst has low activiation energy than the original pathway. The low activation energy will increase the amount of molecules that can benefit in the energy created by the catalyst.

Newtons laws of motion