Reversible reactions

• What is a reversible reaction?

  Where the products can react to produce the original reactants
• If a forward reaction is exothermic but then reversed, what will the reaction be?

  the reverse reaction will be endothermic and will take in exactly the same amount of energy that has been released
• What are reversible reactions represented by?

  $A\ +$$\ B\ \Rightarrow\ C\ +$$\ D$
• How can you change the direction of a reversible reaction?

  By changing the conditions
• What is the equilibrium of reverse reactions?

  When a reversible reaction takes place in a closed system, equilibrium is reached when the rate of the forward and reverse reactions happen at exactly the same rate.