CH-1559
Rusting
Chemistry · Secondary 4 · Medium · Rusting
Magnesium blocks are attached to the hull of a steel ship to prevent rusting.
Which statement best explains how magnesium protects the steel?
Which statement best explains how magnesium protects the steel?
- Magnesium is less reactive than iron, so it does not corrode
- Magnesium reacts with water to form a layer of ice on the steel
- Magnesium is more reactive and is oxidised instead of the iron
- Magnesium neutralises all oxygen in the water so iron cannot rust
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