Essential Chemistry for IGCSE - Air And Water (Section 4 - No. 7)
What does the term 'sacrificial metal' mean in the context of preventing rust?
A metal that is used to make the iron more resistant to corrosion.
A metal that corrodes instead of the iron.
A metal that covers the iron to prevent water from reaching it.
A metal that strengthens the iron.
Explanation
A sacrificial metal corrodes in place of the iron, protecting the iron.
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