Effect of particle size on the rate of rusting
To test the effect of particle size on the rate of oxidation we prepared three samples of steel wool each with different levels of coarseness (shown left). The test tube on the left contains the fine steel wool while the one in the middle contains the medium conciseness steel wool and the test tube on the right contains the coarsest steel wool. 3 cm of water was placed in each tube. The tubes where then left alone for 2 weeks. At the end of the two weeks the wool was removed and weighed to discover the change in mass.