What is phase transition?

by loom91
Tags: phase, transition
loom91 is offline
Oct11-06, 12:15 AM
P: 400

I was wondering, what actually are phase transitions such as fusion or evaporation? I know thermodynamic definitions such as points where the Gibbs energy is non-analytic or heat capacity changes abruptly, but these say nothing about mechanism. Why does a substance suddenly change its characteristics radically? Thanks.

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