Aim: To investigate the factors that cause rusting in iron.
Equipment: Eight test tubes, test tube rack, a bung, four iron nails, hot water, vaseline gel, nail polish or paint, zinc pellets or magnesium ribbon.
Method:
1. Label eight test A - H and place them in a test tube rack.
2. Fill all test tubes with equal volumes of water - enough to cover the nails.
3. Test tube contents:
A = Nail
B = Tap water + nail.
C = Salty water + nail.
D = Boiled water, oil + nail.
E = CaCI, bung + nail
F = Water, vaseline + nail
G = Water + painted nail
H = Zinc, water + nail
3.) Leave the test tubes for at least 3 days.
Hypothesis: A-C will rust especially C. While D-G is not gonna rust.
Picture of BEFORE:
Picture of After:
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