Here’s the science project idea. Children in elementary school, such as the 4th through 6th grade would be able to do this as well as middle school 7th and 8th grade students. In this science project you have to decide what content is most acid in it to clean Tarnish Off of coins
things you need to work :.
- 8 cups
- 8 tarnished copper pennies
- Window Cleaner
- A household cleaner like simple green or fantastic
- baking soda
- Paper towels
- Graph paper
For this experiment is to determine from stable, tarnished copper penny, which liquids or materials removes tarnish best.
Line up glasses in a row on a counter top. Make sure that you will not use this space for something else. The best time to do this is in the evening so that you can let the pennies soak overnight.
Fill each cup with one of the ingredients. You should now have 8 cups with different materials in each. You do not need more than about 1/8 cup of each ingredient. Use just enough for the penny to submerged under water. For toothpaste squeeze a little out of the bottom of the cup and put a penny on the paste and then squeeze more on top of the coin.
baking soda mix a slight amount of water with soda to form a paste and do the same with toothpaste making sure the bottom and top of the penny is covered with material.
Let these glasses liquid sit overnight at room temperature.
In the morning put a paper towel in front of each cup. Remove every ounce of liquid has been sitting in and gently rub and wipe off ounce. Use different paper towel for each coin.
After you’re done with all eight make a visual observation. What does each penny look like? Also look at the paper towel to determine which one has the greatest shock to the paper. Using graph paper record each substance and make a bar graph showing how much tarnish each removed.
When you start you should have made the assumption about what materials technology shock best and why it would remove the shock effectively. Was your theory correct?
This science project is great for middle school or high school. It is even possible to do with a younger student in 3rd or 4th grade. Make sure to have a parent help with material by pouring the glasses and disposal. You may want to wear gloves with various materials.
Science Project ideas can be found in your own home cabinet.