Chemical reaction network

Methane reacts with oxygen to produce carbon dioxide and water. Oxygen reacts with hydrogen to produce water. Methane reacts with chlorine to produce chloromethane. Imagine a network that links methane to two reactions, water to two reactions. This is a network of reactions, or a chemical reaction network. It summarises our knowledge of all possible reactions between a set of molecules.

Below, we demonstate a simple chemical reaction network between a few reactans and products.