Classify the following processes as either exothermic or endothermic:

A) CH₄(g) + 2O₂(g) CO₂(g) + 2 H₂O(l)

B) CO₂(s) CO₂(g)

C) H₂O(l) H₂O(g)

D) H₂O(l) H₂O(s)

E) CO(g) C(g) + O(g)

F) Na⁺(aq) + Cl^-(aq) NaCl(s)