Le Châtelier's principle — Science definition
If a system at equilibrium is disturbed, it shifts in the direction that partially counteracts the disturbance.
Where it is taught
- Chemical Equilibrium — Rates & Equilibrium, Physical Science: Chemistry, Grade 11
In use
The real power of equilibrium comes from being able to move it on purpose, and the rule for doing so is Le Châtelier's principle: if you disturb a system at equilibrium, it responds by shifting in the direction that partially undoes your disturbance.
Chemical Equilibrium