Rusting experiment

Results
Nail with zinc attached rusting after 4 days
  
 

Compare the rusting in each test tube. What can you say?

Is there any rusting in the tube with zinc ribbon? Explain. What is the white precipitate at the bottom of the tube?

Investigate what a SACRIFICIAL ANODE is

Where is a sacrificial anode likely to be used?


Exercises

  
The nail with copper wire wrapped around it after 4 days Nail with zinc attached rusting after 4 days The untreated nail rusting after 4 days. The nail coated with vaseline. Do you think it was properly coated?