2006-10-09 11:30:23 · 6 answers · asked by doubleK 2 in Education & Reference ➔ Other - Education
Dry ice is solid (frozen) carbon dioxide (CO2). CO2 does not exist as liquid at atmospheric pressure but does exist as a solid at low temperatures. It is continually producing gas when surrounded by normal ambient conditions as it absorbs heat and it slides on a layer of gaseous CO2 on your desk. Its manufacture is from liquid CO2 produced under pressure by refrigeration. Liquid CO2 is released from pressure through nozzles to atmospheric conditions and forms a CO2 snow which is then compressed into blocks of dry ice.
2006-10-09 11:50:42 · answer #1 · answered by Robert A 5 · 0⤊ 0⤋
Dry ice is frozen carbon dioxide (CO2). Carbon Dioxide gas is put under pressure, and the temperature lowered to make it freeze. Frozen it can instantly cause skin to freeze, so precautions are necessary when using it. As the frozen dry ice thaws, the frozen gas evaporates, providing a air cushion around the cube. Pennies place on the cube wil scream. Used for cooling during food transport, medical uses, and commercial uses.
2006-10-09 18:41:11 · answer #2 · answered by Sir Ed 4 · 1⤊ 0⤋
It slides across the desk cause it's puffing out vapor all around it, including under it, so it rides like a little hovercraft. It's not really ice, it's solid carbon dioxide CO2. Don't know how it's made.
2006-10-09 18:32:49 · answer #3 · answered by All hat 7 · 0⤊ 0⤋
its frozen CO2
2006-10-09 18:45:21 · answer #4 · answered by pinoydj619 6 · 0⤊ 0⤋
It has 2 be with hot water and salt...PeAcE
2006-10-09 18:38:43 · answer #5 · answered by michael looooou 5 · 0⤊ 1⤋
its nitrogen
2006-10-09 18:33:21 · answer #6 · answered by nights_an_whitesatin 2 · 0⤊ 0⤋