I have read this question:
But the answers therein only explain on a classical level why aluminum foil being a very good conductor and the heat capacity of AL is low, and the mass is very low.
I understand, but I do not see what happens in the lattice of the AL foil when it is in the oven, and I did not find anything that would explain at the QM level why the thin AL lattice structure does not store heat. Is it simply because the electrons in the lattice are loosely bound to the valence shells? And the electrons are able to move (good conductor)? But why does the electrons movement cause the molecule's vibrational motion (heat) capacity to be low?
Is there a QM level explanation for why AL foil does not heat up in the oven?
Is it simply the lattice structure of AL, and the loosely bound electrons that can move easily, causing the foil to stay relatively cool?