Delta G
This parody (written by Greg Crowther) is sung to the tune of
"Delta Dawn"
(written by
Alex Harvey and Larry Collins
and performed by
Helen Reddy).
CHORUS:
Delta G  plus or minus it will be
For reactions in conditions that are known.
If delta H is less than T times delta S,
The reaction can go forward on its own.
The Gibbs free energy gives me satisfaction
From gauging the spontaneity of reactions.
Its equation has an "H"  that's enthalpy 
And entropy is "S" and temperature's "T."
The equation shows if reactions can proceed,
But it doesn't say a thing about their speed.
The study of those rates is called Kinetics,
And it uses lots more math that'll give you headaches.
CHORUS
[repeat and fade]
This song provides a concise introduction to Gibbs
free energy (ΔG) and the equation by which it is calculated
(ΔG = ΔH  TΔS).
