What is entropy? What is enthalpy?

Question

Accepted Answer

Entropy is the measure of disorder or randomness in a system. Enthalpy is the measure of heat energy in a system.

Entropy is a thermodynamic property that increases with the degree of disorder in a system.
Enthalpy is the sum of the internal energy of a system and the product of its pressure and volume.
Entropy is often associated with the second law of thermodynamics, which states that the total entropy of a closed system always increases over time.
Enthalpy is commonly used in chemical reactions to measure the heat absorbed or released by the reaction.
Entropy can be calculated using the formula S = k ln W, where S is the entropy, k is the Boltzmann constant, and W is the number of possible microstates of the system.

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