We know if you heat a liquid up it becomes a gas. But I need to know if there is a such thing as a element that is already a gas And will stay that way. If there is a such thing how could one keep it that way? Is there a certain temperature it must stay at what?

If there is no such gas, is there something that comes close to it?

  • 6
    $\begingroup$ Look around you. Oxygen and nitrogen are such elements: they are already gases and will stay that way, unless you cool them down to extremely low temperatures. $\endgroup$ – Ivan Neretin Jun 19 '16 at 5:36
  • 4
    $\begingroup$ The closest you can get to is probably helium, which does not have a solid phase at ambient pressure $\endgroup$ – Jan Jun 19 '16 at 11:58

A gas cannot be condensed to liquid no matter how high a pressure is applied if the temperature of the gas is higher than the critical temperature of the gas.


Not the answer you're looking for? Browse other questions tagged or ask your own question.