Which statement is a key characteristic of a chemical system at dynamic equilibrium?
The concentrations of reactants and products are equal.
The forward and reverse reactions have completely stopped.
The concentrations of reactants and products remain constant over time.
The rate of the forward reaction is much slower than the rate of the reverse reaction.
25 exam-style questions on OCR GCSE Chemistry Equilibria. Each one has a worked solution and a mark scheme showing where the marks go.