It's a joke, right?

Some physical chemistry jokes collected by one of my p-chem students:

How many physical chemists does it take to wash a beaker?

None. That's what organic chemists are for!

A physical chemist is a student who goes to university thinking he might
want to be a physicist, but gets intimidated by the math.

Physical Chemistry is research on everything for which the negative
logaritm is linear with 1/T -- D.L. Bunker

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Thanks to Alessandra!
On a historical note, D.L. Bunker is Don Bunker, a professor of physical chemistry at my alma mater, University of California, Irvine. He died suddenly during my freshman year.