Question

what is the definition of entropy?
a measure of the overall disorder of a system
a quantity that measures the overall spontaneity of a reaction
a process that will proceed without continuous external influence
a system that can exchange both matter and energy with its surroundings

Explanation:

Entropy is a thermodynamic property that quantifies the degree of randomness or disorder within a system. The other options describe spontaneity (measure of reaction spontaneity), spontaneous processes, and open systems, which are distinct concepts.

Answer:

a measure of the overall disorder of a system