2006-08-22 13:00:46 · 7 answers · asked by mushiplan 1 in Science & Mathematics ➔ Chemistry
Dry ice is a genericized trademark for solid ("frozen") carbon dioxide.
Dry ice at normal pressures does not melt into liquid carbon dioxide but rather sublimates directly into carbon dioxide gas at −78.5 °C (−109.3 °F). Hence it is called "dry ice" as opposed to normal "wet" ice (frozen water).
Dry ice is produced by compressing carbon dioxide gas to a liquid form, removing the heat produced by the compression (see Charles' law), and then letting the liquid carbon dioxide expand quickly. This expansion causes a drop in temperature so that some of the CO2 freezes into "snow", which is then compressed into pellets or blocks.
2006-08-22 13:22:51 · answer #1 · answered by guddy 2 · 1⤊ 0⤋
Carbon Dioxide
http://www.infoplease.com/ipd/A0417385.html
2006-08-22 20:16:06 · answer #2 · answered by ? 4 · 0⤊ 0⤋
dry ice i think is a process of deposition which carbon dioxide becomes solid or frozen.
2006-08-23 05:42:34 · answer #3 · answered by mudkip65 2 · 0⤊ 0⤋
If you really want to make it rather than buy it (some grocery stores have it), you can put an expansion valve on a CO2 cylinder and turn it on. That's how I had to make it in college.
2006-08-22 21:07:53 · answer #4 · answered by jsn77raider 3 · 0⤊ 0⤋
take carbon dioxide.
lower the temperature to about 360 degrees below zero F.
be careful, that's cold.
2006-08-22 20:08:01 · answer #5 · answered by craig g 1 · 0⤊ 0⤋
Freeze carbon dioxide to the point where it freezes, good luck doing that at home.
2006-08-22 20:19:20 · answer #6 · answered by Archangel 4 · 0⤊ 0⤋
I just buy it from baskin robbins.
2006-08-22 20:05:43 · answer #7 · answered by Sydney 4 · 0⤊ 0⤋