Aim - To investigate the factors that cause rusting in iron.
Equipment - Four test tubes, test tube rack, a bung, four iron nails, boiled water, tap water, salty water, cooking oil, calcium and 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.
Aim - To investigate a number of techniques that may prevent rusting.
Equipment - Four test tubes, test tube rack, a bung, four iron nails, tap water, Vaseline gel, nail polish or paint, zinc pellets or magnesium ribbon.
Method -
1: Label four test tubes A-D and place in a test tube rack.
2: Fill all test tubes with equal volumes of water - enough to cover nails.
3: Test tube contents:
A=Iron nail
B= Iron nail cover in Vaseline
C=Iron nail painted with nail polish or paint.
D= Iron nail with a small piece of magnesium ribbon wrapped around it, or with zinc pellets added to the test tubes.
