Oxidizing pennies can be done by using vinegar. The process will result in the formation of a green compound called malachite on the surface of the pennies.
Here’s a step-by-step guide:
- Prepare the Pennies: Place the pennies in a container.
- Add Vinegar: Pour vinegar over the pennies to fully submerge them. The vinegar helps to break up the existing copper oxide, exposing the pure copper underneath.
- Wait and Observe: As the pennies dry and are exposed to air, a chemical reaction occurs.
- Green Patina Formation: Over time, a green compound called malachite will form, oxidizing the pennies. Note that not all pennies may turn green.
In summary, vinegar helps in oxidizing pennies, ultimately leading to the formation of malachite, the green patina seen on oxidized pennies.
