Investigating Rusting

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

Method:
1. Lable six test tubes A-F and place in a test tube rack.
2. Test tube contents:
A= Iron nail and tap water
B= Iron nail and Saltwater
C= Iron nail and water +oil
D= Iron nail and Mg ribbon wrapped around it
E= Iron nail and water calcium chloride bung
F= Iron nail and nail polish

3. Leave the test tubes undisturbed for at least three days.