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: The [[Chemical Reaction|reaction]] only takes place when there is a complete [[circuit]]. If the [[circuit]] is broken the [[Chemical Reaction|reaction]] will stop.
: Once all of the [[reactant]]s have been used, the '''electrical cell''' will stop providing a [[Potential Difference|potential difference]].
==Beyond the Curriculum==
{{#ev:youtube|https://www.youtube.com/watch?v=9OVtk6G2TnQ}}