The substance formed as a result of a chemical reaction is called a product.

Here's a simple way to think about it:

* Reactants are the starting materials that go into a chemical reaction.

* Products are the new substances that are created by the reaction.

For example, in the reaction of hydrogen and oxygen to form water:

* Reactants: Hydrogen (H₂) and Oxygen (O₂)

* Product: Water (H₂O)