I'm in the middle of reviewing these topics (probably my weakest point) for Oct 09.
What exactly is ETS looking for apart from Haliday/Resnick/Walker content? Definitely partition functions and entropy from what I can gather.
Does ETS tend to examine knowledge of state functions (e.g., enthalpy of formation), thermodynamic identity, phase transitions (e.g., law of mass action), FD/Bose-Einstein distributions...?
What is an appropriate textbook for the thermo/stat mech aspect of the GRE? I'm currently studying out of Greiner (Thermodynamics and statistical mechanics) but I think a lot of it may be irrelevant.