Let's Metal coat your Key!

TLSCB001

Jugaadu's Grandma has an Old iron lock, the key of lock is getting corrosion. So she asked for help from Jugaadu. How Jugaadu can help?
science kit
  1. Take the beaker and fill it with water.
  2. Add copper sulphate in beaker and mix it properly.
  3. Make the connections of the battery with alligator clips.
  4. Make Copper strip anode and the metal key as cathode.
  5. Put them inside the solution and observe.
  6. Take the key out after 5-10 seconds and see the copper coating on it.