Question

A chunk of ice at room temperature melts, even at though the process is endothermic. Why?

Answer 1

because the process of ice melting contributes to increase in entropy thus making it a spontaneous process

Answer 2

hi dear....

becz..... the chunk of ice is absorbing energy, as heat, from its hot surroundings; you can simplify your system as follows: the chunk of ice at zero degrees immersed in a "sea" of air at 20∘C ; heat is passing from the air to the ice that melts.

hope it helps.....