* Heat (energy): Combustion is an exothermic reaction, meaning it releases heat into the surroundings. This is the reason why fire is hot.
* Light: Many combustion reactions produce visible light, which is why we see flames.
* Gases: The products of combustion are often gases. For example, burning hydrocarbons like wood or fossil fuels produces carbon dioxide and water vapor.
In summary: Combustion reactions are characterized by the release of heat, light, and gases.
