Brown's gas
Brown's gas is created by electric current flowing in water, the current stretches the water molecule into a stable "stretched" configuration which evolves as gas at room temperature. A spark or flame will cause the gas to IMPLODE back to liquid water at room temperature. (Water vapor at room temperature having a partial pressure of about 45 torr, this is near a vacuum.) A zone-of-implosion "flame" of this gas coming from a burner tip when impinged on any heat-resistant material will raise the temperature of the material to melting point, regardless of what material or that material's melting point. Except for mother-of-pearl. I don't know why. The most exciting aspect of this is that this "flame" when applied to Cobalt 60 radioactive material causes the typical high temperature, and then the radioactivity of the Cobalt 60 is reduced by 95%. All this was published in Extraordinary Science Magazine in 1993. Ten years ago.