Easy Science Fair Projects

Easy Elementary Science Projects: Cleaning A Copper Coin With Lemon Juice

This experiment is another of our easy elementary science projects that uses lemons or lemon juice. We are going to use lemon juice to react with the copper oxide and to remove it in that way. When a copper coin is exposed to the air it reacts with oxygen in the air to form copper oxide that gives the coin a dull appearance.

What you need for this easy elementary science project:

• 4 Tablespoons of lemon juice
• 2 dull copper coins
• A glass
• Water
• A soft cloth
• A camera

What you have to do for this project:

1. Take a photo of your coins before you start, making sure they are both more or less the same in color (dull)
2. Pour the lemon juice into a glass
3. Drop the coin into the lemon juice
4. Leave the coin in the lemon juice for about 5 minutes
5. Remove the coin from the lemon juice, rinse it clean and dry it with a soft cloth
6. What has happened?
7. Take a photo of both coins next to each other to show the difference.
8. Explain what has happened.

Doing easy elementary science projects are a lot of fun. If you want to make very sure you are following the proper scientific method it may be a good idea to get a good science fair project e-book. I have found Science Fair Projects Made Easy to be a very good one; you may want to have a look at it.

For more easy elementary science fair projects you can visit our Easy Science Fair Projects Blog And our Easy Science Fair Projects Website.