Which has the higher entropy, gas or plasma?

Entropy is defined as a thermodynamic quantity representing the unavailability of a system's thermal energy for conversion into mechanical work, often interpreted as the degree of disorder or randomness in the system. This means that disorder is the key not makeup necessarily. read more

Entropy is a measure of disorder. The higher the disorder the higher the entropy. Of the matter states the solid state has the highest order and so the lowest entropy. The order will go down and the entropy up via the liquid, gas and finally the plasma state which is an ionized gas state and thus has the highest entropy. So the answer is: plasma. read more