Galvanization is a method of coating metal objects with layer of other metal. It can be useful to protect against corrosion or to create decorative shapes on metal objects. Chemical background of this process is difficult, but the idea is simple (forgive me my indolence) - use electricity to move a bit of metal to the coated object.
This experiment should be done with carefully and away from fire! Explosive mixture of H2 and O2 is being created during this process.
Tools and materials
- plastic plate,
- one glass of warm water,
- pinch of kitchen salt,
- copper wire with removed isolation,
- aluminum tea-spoon,
- DC power supply (3-10V).