The type of chemical reaction that involves the formation of new compounds is referred to as a synthesis reaction or a combination reaction. In this type of reaction, two or more reactants combine to form a single product, leading to the creation of new chemical bonds. Synthesis reactions are essential in various biological and chemical processes, including the production of proteins from amino acids and the formation of complex molecules in metabolism. Understanding these reactions is fundamental in fields such as organic chemistry and biochemistry, where new compounds play vital roles in living systems.