https://www.youtube.com/watch?v=JslxPjrMzqY#t=6m23s

 

This video makes a distinction between liquid CO2 vapour, and CO2 as a gas, in the context of describing both of them coexisting in the same location. Is there any meaningful distinction between the two, or did the video creator just misspeak?

8 minutes ago, ScienceNostalgia101 said:

https://www.youtube.com/watch?v=JslxPjrMzqY#t=6m23s

 

This video makes a distinction between liquid CO2 vapour, and CO2 as a gas, in the context of describing both of them coexisting in the same location. Is there any meaningful distinction between the two, or did the video creator just misspeak?

There is no real distinction, though I suppose someone might - rather loosely - speak of a "vapour" until the critical point is reached, i.e. the point at which the gas/vapour can't be liquefied by application of pressure. But whether you call it vapour or gas, it is the same state of matter.   

It’s a misstatement. Strictly speaking, vapor is gas. But what’s being described has condensed somewhat into small droplets of liquid, much like water vapor condenses and forms a cloud. You can’t see it in its gaseous form. At the right temperature and pressure, both will exist.