Define dynamic equilibrium in a closed system.

In the subtopic Equilibrium and Le Chatelier's principle, this AQA A-Level Chemistry 7405 learning objective focuses on define dynamic equilibrium in a closed system. It belongs to Chemical equilibria, Le Chatelier's principle and Kc, so revision should stay anchored to this exact subtopic rather than drifting into a generic GCSE-level chemistry summary. Approved keywords to use include dynamic equilibrium, closed system. Closed system. means a physical system that does not exchange matter with its surroundings, allowing for the establishment of dynamic equilibrium Avoid the mistake of students often define dynamic equilibrium as a state where the concentrations of reactants and products are equal, rather than understanding that it is a state where the rate of the forward reaction equals the rate of the reverse reaction; instead, to correct this, remember that dynamic equilibrium occurs in a closed system when the rates of the forward and reverse reactions are equal, leading to constant concentrations of reactants and products. This means that even if the concentrations are not equal, the system is still at equilibrium as long as the rates are balanced For exam answers, remember that dynamic equilibrium occurs in a closed system where the rate of the forward reaction equals the rate of the reverse reaction