For example the ammonia production; the magnetite catalyst is the most common.
Catalyst
inhibitor
A substance that speeds up a chemical reaction is known as a CATALYST.
Enzymes
THE NAME OF THE CATALYST WHICH HASTENS THE RATE OF REACTION OF FOOD BUT DOES NOT PART IN THE DIGESTION IS KNOWN AS A CATALYST KNOWN AS MAGANESE(IV)OXIDE.
You write the name over the arrow in the chemical equation.
The molecule that starts a chemical reaction is called a reactant. It interacts with other reactants in the reaction to form products.
It's called an inhibitor, and it's the opposite of a catalyst.
Enzymes
There is no chemical of that sort. The chemical general name for the substance which speeds up the reaction is known as a catalyst.
The catalyst, and therefore its mass, will not have reduced in quantity during the reaction. By separating the catalyst from the products after reaction and weighing it, decrease in mass should be negligible, if applicable, and associable with loss through transfer from/to locations, proving that it has not reacted.
Endothermic.