Question

What weighs more, a nail or a rusted nail ?

Answer 1

Answer:

A rusted nail is more heavier.

Explanation:

Rusting occurs due to the interaction of iron with atmospheric humidity and oxygen. Thus, rust contains the extra mass of that oxygen and water molecules.

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Answer 2

A rusted nail weighs more than a nail. This is because when rust forms on iron, the mass of the iron object is increased by the mass of the oxygen that has combined with some of the iron.