Principle

Items of practical use are frequently coated with a layer of
nickel, chromium, silver or gold, for aesthetical reasons or as
protection against corrosion. The coating process is carried out
electrochemically, and is called galvanisation.
The students are to coat a part of a sheet of iron with a
layer of metallic copper in a model experiment.

Benefits


No additional cable connections between the building blocks needed - clear arragned and quick setup

Contact saftey due to puzzle blocks system

Corrosion-free gold plated contacts

Doubled earning sucess: Electric circuit diagram on top, real components can be seen unterside



Tasks

How can the surface of a base metal be made more noble?

Demonstrate, in a model experiment, how a sheet of iron can be
coated with a layer of copper.