Here's why:

* Combustion is a chemical process that involves the rapid reaction between a substance with an oxidant, usually oxygen, to produce heat and light.

* In this case, propane (C3H8) reacts with oxygen (O2) to produce carbon dioxide (CO2) and water (H2O).

* The reaction releases energy in the form of heat and light, which is characteristic of combustion reactions.

Balanced Chemical Equation:

The balanced chemical equation for this reaction is:

C3H8 + 5O2 → 3CO2 + 4H2O

This equation shows that for every molecule of propane, you need 5 molecules of oxygen to produce 3 molecules of carbon dioxide and 4 molecules of water.