Question

If KE becomes less than IF , what phase change occurs?

plasma to gas

solid to liquid

gas to liquid

liquid to solid

Answer 1

Yes, it is probably a wrong answer.

In gases (and plasma) - IMFs are absent in ideal gases, and even in real gases, they are very low. But the molecular collisions are immense, so their KE is high. Hence for gases, KE>>IF

In liquids - KE and IF almost the same.

In solids - The molecules vibrate slowly, but this is due to their strong intermolecular forces. KE<<IF

In essence, for general phases

Gases - \(IMF<<KE\)
Real Gases (Pressure > 5 ATM) - \(IMF < KE\)
Liquids \(IMF≈KE\)
Solids \(IMF>>KE\)

Answer 2

So by this, gas to liquid is wrong. I was rather going for the liquid to solid, is that one the answer?

Answer 3

Yeah I can see that it's worded poorly, I'm just assuming that KE and IF were at equilibrium and now KE went less than IF, so I thought liquid to solid