Why do we coat Iron with zinc or copper?
- Copper sulphate
- Copper plate
- 9 volt battery
- Connecting wires with alligator clips
- Glass beaker of 100 ml.
- Gloves
- Tissue
- Scissor
- Iron key
Make copper sulphate solution in the 100 ml beaker by adding 5-6 grams of copper sulphate in the 50 ml of water. Connect the copper plate with the positive terminals of the battery and the key to the negative terminal of the battery. Leave them in the solution for 10-20 seconds. Take the key out see the copper coating on it.