Reversible reactions and dynamic equilibrium key terms

Le Chatelier's Principle

The idea that a system at equilibrium responds to oppose an imposed change. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Equilibrium Shift

The movement of a system at equilibrium in response to changes in concentration, temperature, or pressure. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Le Chatelier's Principle

The idea that a system at equilibrium responds to oppose an imposed change. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Endothermic reaction

A reaction that absorbs heat from the surroundings, typically favoured by increasing temperature. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Le Chatelier's Principle

The idea that a system at equilibrium responds to oppose an imposed change. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

exothermic direction

The direction of a reversible reaction that releases heat when the temperature is decreased. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Le Chatelier's Principle

The idea that a system at equilibrium responds to oppose an imposed change. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Equilibrium Shift

The movement of a system at equilibrium in response to changes in concentration, temperature, or pressure. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Exothermic direction

The direction of a reversible reaction that releases heat, resulting in a lower temperature of the system. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Product yield

The proportion of reactants converted into desired products, often expressed as a percentage of the theoretical maximum. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

equilibrium position

The state in a reversible reaction where the rates of the forward and reverse reactions are equal, resulting in constant concentrations of reactants and products. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

reaction rate

The speed at which reactants are converted into products in a chemical reaction, which can be affected by factors such as temperature, concentration, and pressure. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Le Chatelier's Principle

The idea that a system at equilibrium responds to oppose an imposed change. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Equilibrium position

The state in a reversible reaction where the rates of the forward and reverse reactions are equal. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Le Chatelier's Principle

The idea that a system at equilibrium responds to oppose an imposed change. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Equilibrium Shift

The movement of the position of equilibrium in response to changes in concentration, temperature, or pressure. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Le Chatelier's Principle

The idea that a system at equilibrium responds to oppose an imposed change. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Equilibrium Shift

The movement of a system at equilibrium towards either reactants or products in response to changes in conditions. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Le Chatelier's Principle

The idea that a system at equilibrium responds to oppose an imposed change. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Equilibrium Shift

The movement of a system at equilibrium in response to changes in concentration, temperature, or pressure. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

reversible reaction

A chemical reaction that can proceed in both forward and reverse directions. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

dynamic equilibrium

A state in which the rates of the forward and reverse reactions are equal, resulting in constant concentrations of reactants and products. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Le Chatelier's Principle

A principle stating that if a system at equilibrium is subjected to a change in concentration, temperature, or pressure, the system will adjust to counteract that change. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

gaseous molecules

Molecules that exist in the gas phase, which can influence the position of equilibrium in a reaction. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

reversible reaction

A chemical reaction where the products can react to form the original reactants. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

dynamic equilibrium

A state in a reversible reaction where the rates of the forward and reverse reactions are equal. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Le Chatelier's Principle

A principle stating that if an external change is applied to a system at equilibrium, the system adjusts to counteract that change. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

gas molecules

Molecules that exist in the gaseous state, which can affect the pressure and equilibrium of a reaction. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

dynamic equilibrium

a state in a reversible reaction where the rates of the forward and reverse reactions are equal. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.

Le Chatelier's Principle

a principle stating that if a system at equilibrium is subjected to a change in conditions, the system will adjust to counteract that change. In AQA GCSE Chemistry 8462, use this term specifically when explaining rate of reaction, collision theory, reversible reactions, equilibrium, catalysts, graph gradients, or Le Chatelier's principle.