Rust is an , irreversible (chemical) change., Iron + oxygen + water -->, hydrate iron (III) oxide (rust), Galvanise means, adding a layer of zinc to the iron to prevent rusting., You add a barrier such as,, oil, paint or a wrap to the iron to prevent it rusting., Sacrificial protection, attaching bars of magnesium the magnesium reacts first as it is more reactive than the iron.

Leaderboard

Visual style

Options

Switch template

)
Continue editing: ?