* Gasoline is a hydrocarbon: It's made up of hydrogen and carbon atoms.

* Combustion needs oxygen: Gasoline burns (combusts) by reacting with oxygen. This reaction releases energy in the form of heat and light.

* No oxygen, no combustion: Without oxygen, gasoline won't burn. It will simply remain a liquid.

Important Note: Even if you somehow managed to isolate gasoline from oxygen, it wouldn't be a safe or practical thing to do. Gasoline is highly flammable and volatile, and its vapors can mix with air to create explosive mixtures.