Question

Sign of entropy when raw egg changes to boiled egg

Answer 1

Entopy will increase so sign will be positive

Here is the explanation

The protein in egg whites is albumen, which is tightly folded in an uncooked egg. The balls will slide past each other, so it is a liquid. The entropy is low because of the precise folding.

After cooking, the protein molecules are unfolded and tangled, forming a solid. The entropy of the egg whites is actually higher.

When they're cold, the chain-like protein (allbumen) molecules are folded up into little balls. There's a specific way each folds. That arrangement has relatively low entropy. The little balls can roll past each other, so the whole thing is liquid. On heating, the molecules unfold and start flopping around. As you might guess, this has higher entropy. Once unfolded, the molecules get tangled up with each other and flow less easily than when they were little balls. When they then cool down they stay tangled up and really get stuck in a fairly rigid rubbery cluster.