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Anonymous asked in Science & MathematicsChemistry · 1 decade ago

Questions About Metal Rusting?

Can a paperclip rust a day in salt water?

also how long will it take for these metals to rust in salt water:


steel spoon

small ball of aluminum foil

thank you

2 Answers

  • 1 decade ago
    Favorite Answer

    Paperclip - Might take a while.

    Penny - Not sure what American coins are made of but most likely this is an alloy of more than one metal, making it harder to corrode

    Steel spoon - Presuming that you mean stainless won't rust, since it's made for the elements, and it's an alloy of many different metals.

    Small ball of aluminum foil - Won't rust. Aluminum has a protective oxide coating that acts as a shield to prevent the actual aluminum from corroding

  • 1 decade ago

    Can a paperclip rust in a day? Probably. Just make a small nick/scratch in the paper clip and it will rust faster.

    Penny? I'm not sure. Probably awhile.

    Steel spoons are usually plated with another metal; so if you remove that metal coating, it will probably rust just as fast as a paperclip (if a paperclip were the size of the spoon)

    Al foil... Aluminum will not rust very far; Aluminum becomes aluminum oxide -- see rubies/sapphires. This coating protects the aluminum so it will not rust beyond a very thin coating of aluminum oxide. However, if you add a little bit of liquid mercury, it will rust.

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