When I teach about the conservation of ferrous metals once of the simplest and most useful things is to understand how metals react with each other. The reactivity series of metals is a really useful thing so I have designed a ready reference guide which metals should and should not be placed in contact - e.g. a galvanised (zinc) bolt against an iron frame will rapidly oxidise / corrode sacrificially to 'protect' the iron. Right click and share !

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