What type of chemical reaction is characterized by oxygen combining with a substance, typically releasing energy in the form of heat and light?

The type of chemical reaction characterized by oxygen combining with a substance, typically releasing energy in the form of heat and light, is known as a combustion reaction. In combustion reactions, a hydrocarbon or another organic substance reacts with oxygen, resulting in the production of carbon dioxide and water, along with the release of energy. This energy manifests as heat and light, which is why flames are often visible during combustion.

For example, when methane (a common natural gas) burns in the presence of oxygen, it produces carbon dioxide and water while releasing significant energy. This process is crucial not only in everyday applications like cooking and heating but also in engines and various industrial processes.

Understanding combustion reactions is essential in various fields, including environmental science, engineering, and energy production, as these reactions influence emissions and the efficiency of fuel usage.