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More Lessons for IGCSE Chemistry
Math Worksheets
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.
Questions
Answers
Six-Way Cell
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.
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Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.
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