Corrosion

 Aim: To investigate the factors that cause rusting in iron and corrosion.

Equipment: 6 nails, 9 mls, saltwater 9mls of water plus oil on top, nail polish, calcium chloride, bung, aluminum wrap, test tubes x6.

Method:

1. put 6 iron nails in 6 different test tubes.

2. cover one nail with around 9mls water, Cover one with water and add oil layer on top, Cover one nail in nail polish, Cover one nail in saltwater, Put calcium chloride with a nail and cover with a bung, Wrap a nail in aluminum and put in a test tube.

3. Leave these test tubes aside for three or more days.

Results:

Discussion: The water made the nail rust fast but the saltwater rusted the most because the water speed up the time it took for. The one that rusted the least was the calcium chloride because it dries out the oxygen so there is no natural environment to cause the rusting in the metal nail. The Corrosion experiment shows what is quicker for the metal to corrode in.

Conclusion:

The metal in the most natural environment should rust the most because for metal to rust it needs things like water, salt, and oxygen. All three of this help speed up the time it takes to corrode. If you put metal in an unnatural environment the metal will take longer to corrode since it takes out the things the metal needs to corrode.