Enthalpy of...

[MedPR]

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Fusion (melting) = endothermic
Vaporization (boiling) = endothermic
Condensation = exothermic
Freezing = exothermic

Right?

 

[pfaction]

I think of entropy and enthalpy as the same here, which may not be true, but...
Anything that causes the molecules to vibrate is endothermic, anything that causes them to stop vibrating is exothermic.

 

[chiddler]

Fusion (melting) = endothermic
Vaporization (boiling) = endothermic
Condensation = exothermic
Freezing = exothermic

Right?

yeah just think of the bonds. broken = endothermic. formed = exo.

 

[TXKnight]

Fusion (melting) = endothermic
Vaporization (boiling) = endothermic
Condensation = exothermic
Freezing = exothermic

Right?

yep...like the previous poster said, I think about the energy required/released to loosen/break/form intermolecular attractions