ʻOku ʻomi ʻe he mafana ʻo e ʻea fakapaaki ʻo e ki hono ignition huʻanga, taki ki hono māmá: 2H2 + O2 + ko ha maʻuʻanga ignition = 2H2O.
Combustible e ngaahi kasa ʻi hono aʻusia ha concentrations pau ʻi he ʻea pe ʻokisikena, ko ha meʻa ʻoku fakaʻuhingaʻi ko e fakangatangata ʻo e maumau. Maʻa e fakapaaki ʻo e, ʻOku mafola ʻa e fakangatangata ko ʻeni mei he 4% ki he 74.2% ʻi he ngaahi tuʻunga ʻo e Voliume.