Chemistry / Unit 11 Chem 2071 short lesson, about 20 seconds
Twin: Entropy Is Not Disorder
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The idea
Calling entropy "disorder" is a loose description, not the definition; entropy is the count of accessible microstates, and where the two labels diverge, microstate count wins.
In practice
Dissolving a solid in water raises entropy because far more particle arrangements become accessible, a fact "disorder" describes only by accident.
Where people slip
Treating "looks more disordered" as grounds for a higher-entropy verdict skips the actual test.
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