That's how rubidium and cesium are described in this video about the explosive consequences of mixing alkali metals and water.
Gotta love the Brits. See also the competition between thermite and liquid nitrogen. Round two matches the winner against a Peugeot engine, and then the car's gas tank.
More like this
We biologists think we're all grody and cool with our dead mice, but then some smart-aleck chemist has to go trump us al
Thermite annihilates liquid nitrogen:
In comparison to other science shows, Brainiac is quite effective at appealing to the visceral compulsion to play with fire. In this case, they pitted scorching hot thermite against molten metal.
Last week, it was a dramatically exploding turbine at a wind-power farm in Denmark.
...Aaaand it's a fake. See here Theodore Gray's page for details.
Damn. I wondered how those glass ampules were opening in the bathtubs, and that pretty much answers it. I suppose I should turn this into an entry for Skeptics' Circle.