Forms of matter

[Leroy]

On the main page there was this link:

 

http://scienceforums.net/forums/showthread.php?s=&threadid=2747

 

Noting that a new form of matter was found stating that solid, gas, liquid, plasma and Bose-Einstein condensate were previously known.

 

Question 1:

Since i study chemistry, i was wondering where super critical fluids fall under?

 

Question 2:

And if they are a different type why aren't they mentioned?

 

Question 3:

If super critical fluids aren't a different form of matter, what differentiates the condensates with the three forms (gas, solid, liquid) which everyone is familiar with?

[wolfson]

http://www.chem.leeds.ac.uk/People/CMR/whatarescf.html

hope it helps

[Leroy]

yeah, i know that which was in the link, but are super critical fluids a different form of matter?

[wolfson]

A SCF is defined as a substance above its critical temperature (TC) and critical pressure (PC). The critical point represents the highest temperature and pressure at which the substance can exist as a vapour and liquid in equilibrium. The phenomenon can be easily explained with reference to the phase diagram for pure carbon dioxide (Figure 1) in the LINK look at it.