If the last video on diet coke + mentos isn't enough, here is more for the pyro-fanatics out there.
Check out this video on soft drinks + dry ice. Dry ice was dropped into a 2 litre pet bottle. Unlike the mentos method, this does not cause the carbon dioxide to be released immediately in the form of a water fountain. It has to be mixed via a hard impact with the ground. The result is not a water fountain but a instant explosion !The dry ice was broken up by the impact when the bottle hitted the ground, and it caused the liquid to contract immediately. The result is that the carbon dioxide got squeezed out and caused the whole package to explode. Dry ice itself is actually solid carbon dioxide, so once it absorbs heat from the soft drink, it expands rapidly into it's gasous form, adding to the explosion. Woah, where do I buy dry ice. Heehee !
Dry Ice - Watch more funny videos here
On the other hand, we have some madman who dump thermite on a block of liquid nitrogen. It's good fun ! A thermite reaction is a type of aluminothermic reaction in which aluminium metal is oxidized by the oxide of another metal, most commonly iron oxide. (From wikipedi) It can reach high temperatures of 2500°C compared to the low temperature of liquid nitrogen, -196°C. So what happens next? Watch this !
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