More Lessons for IGCSE Chemistry
A series of free IGCSE Chemistry Activities and Experiments (Cambridge IGCSE Chemistry).
Cells and Batteries
Voltaic Cells with a salt bridge
A cell uses a chemical reaction to create electricity. Moving electrons create electricity, and electrons flow from the anode (the site of oxidation), to the cathode (the site of reduction).
In order for a cell to generate electricity for a longer time, it may be separated into two half-cells connected by a salt bridge. The salt bridge helps to balance charge, and lets ions move between the two half cells.
We can write redox half reactions for the two half cells, which show the gain and loss of electrons.
Voltaic Cell Experiment
Metal strips dipped in solutions of appropriate metal salts are linked with a salt bridge.
How to build micro-voltaic cells using metals and metal ion solutions on filter paper?
Measure the voltages and compare the standard reduction potential for each metal.
Try the free Mathway calculator and
problem solver below to practice various math topics. Try the given examples, or type in your own
problem and check your answer with the step-by-step explanations.
We welcome your feedback, comments and questions about this site or page. Please submit your feedback or enquiries via our Feedback page.