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: '''Reversible reactions''' use the symbol ⇌ to show that the [[Chemical Reaction|reaction]] can happen both ways.
: A [[Reaction Mixture|reaction mixture]] which can undergo a '''reversible reaction''' will reach a state of [[Dynamic Equilibrium|dynamic equilibrium]] where there is a constant amount of the [[reactant]]s and [[product]]s as the [[Chemical Reaction|reaction]] keeps happening in both directions.
: Since some [[Chemical Reaction|reaction]]s may be [[exothermic]] and others may be [[endothermic]], then one direction of [[Chemical Reaction|reaction]] will provide [[energy]] to the environment while the other direction will [[Absorb (Physics)|absorb]], that same amount of, [[energy]].
===Examples===