Please forgive my ignorance on this matter, I really don't know who to ask. Does chirality affect the bonds of hydrogen and oxygen in water, or is this only applicable to complex molecules like amino acids?

If so, could it be possible to break that bond using circularly polarized light? Also, how does one, in lay terms, circularly polarize light? Does it require a lot of energy to achieve?

I have been told that the substances in gravy react together and bind when they cool - it is not, apparenty just a case of a liquid turning to a solid. I would like to know why this happens, and even hopefully what molecules are involved. Thankyou xxx