1) What is enthalpy, and what is ΔH for a reaction, and what
does it mean if ΔH is positive or
negative?
2) What is entropy, and what is ΔS for a reaction, and what does
it mean if ΔS is positive or
negative?
3) What is Gibbs free energy, and what is ΔG for a reaction, and
what does it mean if ΔG is
positive, zero or negative?