1. Compare the rate of rusting of straight nails and ones that have been bend or hammered
2. In the case of a nail that has been bent about 90 degreesis there a difference between the rate of corrosion on the inside and outside of the bend?
3. Compare the rate of rusting of nails in dilute solutions of salt and copper sulphate solutions?
4. How would you show by experiment how rusting is affected by environment? Would you expect the surfaces rusted evenly?