CH-1556
Reactivity series
Chemistry · Secondary 4 · Medium · Reactivity series
An iron nail is coated with a thin layer of zinc. The zinc layer is scratched so that bare iron is exposed. The nail does not rust quickly. Why?
- Zinc is more reactive than iron and corrodes instead of the iron.
- Iron is more reactive than zinc and corrodes instead of the zinc.
- Zinc is less reactive and forms an inert layer on the iron.
- Iron forms a protective layer of rust that stops further corrosion.
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