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Why does metal rust?

Many times we have seen reddish brown flakes on the metal. This is known as rust. When iron reacts with oxygen it forms a new substance called iron oxide. This can happens only if the oxygen level is enough for reaction. Chemical reaction takes place in this process. Iron never reacts with the oxygen present in the air because there it moves in the combined state with other oxygen and here oxygen is not capable to react, so why the iron gets rusted? Oxygen present in the air when dissolves in water it gets separated from the other oxygen and moves on its own way. Hence does not remain in combined state. Now iron can react with oxygen in its singular state. So we can say that metal gets rusted only when oxygen, moisture, and iron react with each other. The brown coating which is hydrated ferric oxide and commonly known as rust. Rusting makes the metal weak enough so that it can be easily broken.

If salts are added to the mixture then this reaction can be speeded up. The iron oxide which is formed is porous and bulky which allows iron and oxygen to further react causing more oxidation. If this oxidation is not halted here only then whole of the metal can change to ferric oxide or rust and it becomes so weak that it can be broken easily.
We can prevent metal from getting rusted by not allowing the water and oxygen mixture to come in contact with iron or by coating the iron with oil, grease, paints etc. if these coating wipes off the iron can begins to rust again.

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  1. This is a good site!

  2. I knew it had something to do with oxygen!

  3. It is a good site, but I would like a little more in it.

  4. this is a wonderful site! i am currently doing a paper on this topic and this site really backs up everything in my essay. THANK YOU!!!!!!

  5. THANK U!!! this is awesome!!! im doing science fair (its required) and this really helps answer my 1st research question!!! THANK U SO MUCH!!!!! =D

  6. this is awesome i 5think

  7. Thank who ever made this im doing a research report and science fair on this topic and it really told me alot but i would like more information and the name of the persom who typed this THAAAAAAANKS !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

  8. i did a science fair project and i got a lot of goo info from this web site and i used it a lot but………… : ( i need to know who wrote this web page so i can write it on my bilyogerfy so who ever wrote this page tell we soo thanks you : )

  9. kirandeep wrote this page

  10. Needs a bit more information but its still good

  11. I think I’l use some thing here for my science fair in two months

  12. This is the best website ever

  13. This is a good site but i already have this information i need more

  14. I work in a machine shop. Several of our operators have an “issue” where all the parts (metal / steel / etc.) they touch rust. Is there something unique about these individuals that causes this?
    Many thanks!!

  15. Good but not much info
    Overall 8 and a half out of ten

  16. This will be a very helpful for my chemistry project.

  17. This help me A’s my science fair research paper AWSOME Right ??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

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