The entropy of a bucket of water as it is cooled down is said to decrease because the water molecules are moving closer together. This decrease in entropy is due to the motion of the water molecules, which reduces the amount of energy that the water molecule has available.

Entropy is a thermodynamic property that tells you how much energy a body has to do work. When a body is cooled, the particles inside it slow down. As a result, the entropy of the body increases. Now, the entropy increases by an amount equal to the difference between the actual macrostate and the most probable macrostate. As a result, entropy will increase as the body is cooled.

Entropy System

The entropy of a system never decreases. It either stays constant or increases. You should know that the entropy of the system can be calculated according to the equation: S=k*log(W). Here k is the Boltzmann constant, T is the temperature of the system and W is the number of possible microstates. Consider the following analogy: the entropy of a system is like the amount of disorder in the system. When you start cooling down a system, the entropy will first decrease but then increase as the system becomes more ordered.