Flames contain electrons and ions due to the high temperatures involved in combustion, which leads to the breaking of bonds and rearrangement of atoms and molecules into lower energy states. This process partially ionizes a small percentage of the molecules present, resulting in the formation of free electrons and ions. The presence of these charged particles is an intermediate step in the combustion reaction. Understanding this phenomenon is crucial for comprehending the physical and chemical properties of flames. Overall, the ionization in flames is a key aspect of the combustion process.