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Electrochemical cell
An electrochemical cell is a device that uses redox (reduction-oxidation) reactions to either produce or consume electrical energy.
Electrodes
Electrodes are solid surfaces where the redox reactions occur
Salt bridge
The salt bridge is a tube or porous material filled with an ionic solution (e.g., KNO₃ or Na₂SO₄). It allows ions to flow between the two half-cells, maintaining electrical neutrality and completing the circuit.
Voltaic cell
A voltaic (galvanic) cell is an electrochemical cell that converts the energy released by a spontaneous redox reaction into electrical energy.