IB Chemistry Sub-topic R2.3 Definitions
This page contains our IB Chemistry definitions for sub-topic R2.3. By learning each one of these definitions, you will fully cover the content for IB Chemistry 'Extent of change'.
closed system
A reaction environment that conserves mass and energy. This means no reactants or products can exit into the surroundings.
dynamic equilibrium
A state of a closed system wherein the rates of the forward and reverse reactions are equal, maintaing the concentratino of products and reactants
equilibrium
A state of a closed system when the concentration of products and reactants remains constant
non-reversible reactions
A reaction that can only occur forwards to convert reactants to products
phase equilibrium
An equilibrium between phase changes for example between liquid and gas. The overall concentration of products and reactants remains the same.
reversible reaction
A reaction that can occur forwards to convert reactants to products and reverse to convert products to reactants
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