6. The rate of chemical change

• A reversible reaction in one where the products can re-form the reactants. The reactants. The reaction can go both ways
• For example:

  A rection with B to form C and D

  C and D are able to react to form A and B
• If the forward reaction is exothermic then the backward reaction will be endothermic
• The amount of energy transferred is the same for both the forward and reverse reaction
• In a closed system, a reversible reaction can reach dynamic equilibrium

  This is where the forwards and reverse reactions are occurring at the same rate and the concentrations that are reacting remain constant