BRAINCAKEThe Second Law of Thermodynamics
The second law of thermodynamic states that spontaneous changes result in an increase in disorder or entropy. This determines the direction of any physical, chemical or biological change. However, an increase in entropy means an increase in entropy of both the system and the surroundings.
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Key terms in this lesson
- entropy
- A measure of the number of ways particles and their energy can be arranged, or the degree of disorder of a system.