[matt99]

Hi, can everything be turned to a liquid? If you're cooking food or heating something up is there a point where if you have the right temperature it will turn to liquid before turning to a gas?

Thank you.

[Mitch]

CO2 is a solid at low temperatures, and when heated it will turn into a gas.

[matt99]

CO2 is a solid at low temperatures, and when heated it will turn into a gas.

Thanks for the reply. So to clarify, there is no temperature someone could use to make it a liquid?

Also, is this solid to gas reaction the usual for most chemicals or is it only found in a few or certain groups?

[Mitch]

You can make CO2 a liquid but not at normal pressures. There are only certain temperature/pressure combination that will have CO2 as a liquid. We make cool diagrams showing stuff like this, read this article and if you have any more questions feel free to post them: http://en.wikipedia.org/wiki/Phase_diagram

Solid to gas transitions are rather common but not the norm.

[Borek]

http://en.wikipedia.org/wiki/Sublimation_(chemistry)

[Yggdrasil]

Some compounds react or decompose before they melt.

[matt99]

Thanks for the help guys.