Science - Corrosion Experiment

Corrosion Experiment

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

Equipment: Six test tubes, test tube rack, a bung, four iron nails, tap water, salty water, cooking oil, calcium chloride.

Method: 

1. Label 6 test tubes (1-6) and place in a test tube rack.

2. Test tube contents: 

• Tap water
• Saltwater
• Water + Oil
• Nail polish + water
• Mg wrapped around + water
• Calcium chloride sealed with a bung

Results:

Discussion:

With the water and oil one, obviously the oil sat on top (because water is denser than oil) but it looked pretty cool. I don't understand how some of them are going to work but I'm hoping they do.

Conclusion: 

Most of them corroded, but some didn't. They need oxygen and water to corrode, so some didn't because they didn't have access to what they needed. The rust was an orange iron. Almost all of them had access to water and oxygen so almost all of them corroded. The calcium chloride one didn't have access to any oxygen or water so it didn't corrode.