Here is an experiment using dry ice and magnesium that should only be done under the supervision of a professiobnal.  Do not try this at home.  As from the description here is what is happening:

Two 11lb blocks of dry ice, 2.25g of Magnesium ribbon, and a blow torch. By lighting the magnesium on fire inside the dry ice and then placing the second block on top, we created Magnesium Oxide (White) and elemental Carbon (Black).

Magnesium is very volatile.  And dry ice is frozen carbon dioxide, which can be used in a wide array of fun and sometimes dangerous science experiments.  You will also notice they have a fire extinguisher in case anything gets too out of hand.

Watch what happens in the video when they light it on fire..

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