Corrosion of Iron

In this investigation we will model the factors that cause the corrosion (rusting) of steel wool, which is made mainly of iron. 

What factors cause the corrosion (rusting) of iron?

This is where you record what you think will be the answer to your question and why you think this.

• 3 test tubes

• 3 graduated cylinders

• 3 test tube clamps and stands

• Electronic balance

• Small beaker

• 1 g steel wool

1. Divide steel wool into two equal pieces. 

2. roll the steel wool into a tiny ball that will fit into the test tube but will NOT fall out when turned upside down.

3. Add tap water to the small beaker and soak one of the steel wool pieces for about five minutes. Leave the other piece of steel wool dry.

4. Squeeze the excess water from the first piece and place in the bottom of one test tube.

5. Place the dry steel wool in the bottom of the second test tube.

6. Leave the third test tube empty. 

7. Add approximately 40 mL of water to each of the three graduated cylinders.

8. Set up the three test tubes as shown in the figure shown below. One test tube will be empty. 

9. Complete the table on your lab report to record the volume of the water level in each test tube. 

10. Leave the apparatus set up for 24 hours.

11. Record the new level of water after the 24 hours.

12. Calculate and record the change in the water level in each test tube.