Combustion chemistry is the study of chemical reactions that occur when a substance reacts with oxygen, producing heat and light. This process typically involves hydrocarbons, such as those found in fossil fuels, which release energy when burned. The main products of complete combustion are carbon dioxide and water, while incomplete combustion can produce harmful substances like carbon monoxide and soot. In combustion reactions, the reactants undergo a transformation, breaking chemical bonds and forming new ones. The energy released during this process can be harnessed for various applications, including powering vehicles and generating electricity. Understanding combustion chemistry is essential for improving energy efficiency and reducing environmental impact.