Second Law of Thermodynamics

Definition

The Second Law of Thermodynamics states that the total entropy, or disorder, of a closed system tends to increase over time. In other words, things generally move from a state of order to a state of chaos.

Related terms

Entropy:

Entropy refers to the measure of disorder or randomness in a system. An example would be an untidy desk with papers scattered everywhere.

Closed System: A closed system is one that does not exchange matter or energy with its surroundings. A sealed jar containing gas could be an example.

Equilibrium: Equilibrium refers to a state where there is no net change in a system. For instance, when temperature inside a room matches the temperature outside, they are said to be in equilibrium.