Corrosion is a natural process where materials like copper, zinc and iron are able to react chemically with their environment. Learn about corrosion through a really interesting experiment with some pennies and some cola.
For this experiment you will need a shallow plate or bowl, some old corroded copper coins - the older the better, some cola, water and kitchen roll. You could optionally replace cola with lemon juice, or vinegar, or apple juice. The experiment will need to be left overnight to see results.
You will need some adult permission and supervision. View on YouTube.