This is a simple experiment you can easily replicate at home using things you may find around the house. It's something people of all skill levels can do and can be a fun little experiment to do with the kids.
Step 1: Materials Needed
List of materials
- Oxidised Copper - copper coins or copper fittings, should be dull indicating it's oxidised
- Weak Acid Solution - white vinegar or lemon juice is best to see results
- A Glass container - best for seeing the results
- Wire wool or other abrasive cleaner.
- An iron nail - not galvanised - as used in my 'How To Make An Electromagnet' video see that here.
Step 2: Add Copper To Solution
Pour your weak acid solution (lemon juice or white vinegar) into your glass container and add a small amount of salt. Now add your oxidised copper to the solution. Remember to use dull copper, as this is an indication that it's oxidised. The more oxidised copper you add the more chance you have of better results. Leave the solution to stand for at least 10 minutes.
Step 3: Copper Plating Iron
While you wait it's a good idea to use your time to clean your iron nail. Clean off the top layer using your wire wool. This will reveal the shiny surface and remove any impurities. Remember to give it a quick wipe when you've finished cleaning to remove any residual dirt. Once ten minutes has passed add a drop or two of fresh acid solution (vinegar or lemon juice which ever your using). Now add the iron nail and leave it at least half an hour or longer. I find swilling the solution around helps speed up the process.