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GCSE Chemistry · key term
A device in which reacting chemicals produce a potential difference and can transfer electrical energy around a circuit.
Used by AQA
Specification 4.5.2.1 · Paper 1
Revise: Electrochemical CellsA chemical cell converts energy stored in chemicals into electrical energy. Its chemical reactions create a potential difference, or voltage, between two electrodes. If the electrodes are joined through a complete external circuit, this potential difference drives electrons through the wire and can operate a device.
When explaining a simple cell, name all three essentials: two different metal electrodes, an electrolyte and a complete external circuit.
In an evaluation, use the information given and compare relevant criteria rather than claiming that one type of cell is always best.
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