Corrosion Science

Aim: To investigate the factors that cause rusting in iron
Equipment: Four test tube, test tube racks, a bung, four iron nails,boiled water,tap water,salty water, cooking oil,calcium chloride.
Method: 
1.Label four test tubes A-D and place in a test tube rack.
2. Test tube contents A= Iron Nail and tap water
B= Iron nail and salty water 
C= Iron nail, boiled water, oil
D= Iron nail and calcium chloride. sealed with a bung.
3. Leave the test tubes undisturbed for at least three days.