What is Dry Ice?

Answer 1

Dry ice is a genericized trademark for solid (frozen) carbon dioxide. The term was coined in 1925 by Prest Air Devices, founded in Long Island City, New York in 1923.[1] The name refers to the fact that under normal atmospheric pressure, solid CO2 sublimates, or changes directly into a gas without passing through a wet liquid phase. As a general rule, dry ice will sublimate at a rate of five to ten pounds every 24 hours in a typical ice chest.

Dry ice is produced by compressing carbon dioxide gas to a liquid form, removing the heat produced by the compression (see Charles's law), and then letting the liquid carbon dioxide expand quickly. This expansion and the high-speed evaporation of carbon dioxide gas cools the remainder of the liquid down to the melting point, where some of the CO2 freezes into 'snow,' which is then compressed into pellets or blocks. The freezing point of CO2 is -109.3 °F or -78.5 °C.

There is much more in the Wikipedia entry for dry ice at:

http://en.wikipedia.org/wiki/Dry_ice#Dry_ice

Answer 2

Frozen Carbon Dioxide (CO2). Called dry ice because it undergoes sublimation (goes straight from solid for to gaseous form without the liquid intermediary stage).

Answer 3

I think it Frozen Carbon Dioxide! Very cold and you not want to touch!!!!
It cool for making your own Carbonated Drinks (Instructions usually on the Package) and around Halloween Time, drop some in water for the smoke effect.

Answer 4

dry ice is melted ice.

Answer 5

yes it is frozen to an extremely cold ,way below zero. it can actually freeze your fingers instantly if you pick it up. it is used to ship frozen items long distance at times

Answer 6

I think it is a beer but I don't drink so I don't really know.

Answer 7

I'm not sure eather, but it looks cool.

Answer 8

I dont think there is such thing

Answer 9

never heard of such a thing......haaaaaaaaa