Don't blame me if this is a stupid question, I'm only 10.
2007-04-19 02:39:27 · 9 answers · asked by haziqikram 2 in Science & Mathematics ➔ Chemistry
THIS IS NOT HOMEWORK!!!
2007-04-19 02:54:49 · update #1
This is a property of the chemical called carbon dioxide CO2. Dry ice is solid carbon dioxide. At usual atmospheric pressures (air pressure on earth), CO2 does not melt into a liquid, but goes directly into the vapor state as it is heated. This is called "sublimation".
If you put CO2 into a pressure tank, you can turn it into a liquid by applying enough pressure. This is commercially called "liquid carbonic acid". You might see tanker trucks on the highway carrying this stuff.
2007-04-19 02:57:33 · answer #1 · answered by Jerry P 6 · 0⤊ 0⤋
There are no stupid questions, but there are leading answers. Which means, I won't give you the answers to your homework, but I'll point you in the right direction.
Go look up the properties of carbon dioxide, which when frozen is called "dry ice". Compare them to the properties of liquid water.
2007-04-19 02:43:06 · answer #2 · answered by Ralfcoder 7 · 0⤊ 0⤋
Solid carbon dioxide, often known by the generic trademark "dry ice", is a versatile cooling agent. Unlike water ice at atmospheric pressure it sublimes, changing from a solid directly to a gas. Its sublimation point is -78.5°C (-109.3°F). A combination of its low temperature, solid phase and direct sublimation to gas makes it a simple and effective coolant. Dry ice is also inexpensive; it costs about $2 (US) per kilogram.
2007-04-19 02:43:00 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Dry ice is soldified CO2 gas. Hence it turns into gas without turning to liquid.
2007-04-19 02:43:20 · answer #4 · answered by Bilu 1 · 0⤊ 0⤋
not entirely correct. dry ice turns into a gas directly from its solid state at room temperature. it does not require being put into water. this process (turning from solid directly into a gas) is call subliming.
2007-04-19 02:42:39 · answer #5 · answered by Anonymous · 1⤊ 0⤋
At 1 atmosphere (our typical atmosphere), dry ice should be in gas.
2007-04-19 04:21:55 · answer #6 · answered by Ms. Buckyball 3 · 0⤊ 0⤋
it was never liquid to begin with...dry ice is solidified nitrogen or carbon dioxide i forget which one
2007-04-19 02:43:01 · answer #7 · answered by Anonymous · 0⤊ 0⤋
at ambient temperature and normal pressure , CO2 is a gas, it cant be liquid.
2007-04-19 03:22:01 · answer #8 · answered by Anonymous · 0⤊ 0⤋
Yeah, kinda sublime, isn't it?
2007-04-19 03:24:35 · answer #9 · answered by ? 4 · 0⤊ 0⤋