True: Exothermic reactions have a negative energy change, In a reversible reaction the products can react to reform the reactants, If a forward reaction is exothermic, the reverse will absorb energy , At equilibrium the forward and reverse reactions happen simultaneously and at the same rate, A system must be closed to reach equilibrium, False : Endothermic reactions have a negative energy change, Chemical reactions are never reversible , If a forward reaction is endothermic, the reverse reaction will absorb heat , At dynamic equilibrium, the mixture is made up of an equal proportion of reactants and products, A system at dynamic equilibrium will not react to changes in temperature, concentration and pressure,

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