When heat flows from a hot spot to a cooler spot, entropy increases. When heat is forced to flow from a cool spot to a warmer spot, entropy decreases. Marta is looking for something in her house that causes a decrease in entropy. Which of these should she choose?

Question

an egg frying
the toaster
an ice cube melting
the refrigerator

I think its an egg frying because the egg goes from runny to solid right?

Answer 1

A.) An egg frying is taking in heat and energy to undergo a change. Therefore, entropy is increasing.

B.) The toaster has coils that heat up. So if bread is placed within. Entropy is increasing.

C.) An ice cube melting will be releasing energy to change its state. So entropy is increasing.

D.) The refrigerator to cool uses coils that take air and compress it. In the inside it's cooler than the outside. Hence entropy is decreasing.