When butane reacts with oxygen, it undergoes combustion, a chemical reaction that releases heat. This means the temperature of the surrounding area will increase.

Here's why:

* Combustion is exothermic: Exothermic reactions release energy into the surroundings, usually in the form of heat.

* Butane and oxygen react to form carbon dioxide and water: This reaction releases a significant amount of energy.

Think of a lighter or a gas stove - the flame is a visual representation of the heat released by the combustion of butane.