PREP TIME: 2 MINUTES
EXPERIMENT DURATION: OVERNIGHT
3 pennies made before 1983
Can you make a penny look new again?
Pennies made before 1983 are made of mostly copper, which turns dull with age. Using the juice of a lemon, or a dark soda, you can make a penny look new again.
Line up the cups. Pour the juice of the lemon into one of your cups, pour soda in another and the fill the last with tap water. Drop a penny into each of cup and let it sit overnight.
In the morning, pull your pennies out of the liquid.
The pennies that were in the soda and the lemon juice will be shiny, but the penny that was in water will still be dull.
Why It Worked:
SlThe liquids work as a cleaner, and easily take the gunk and grime off an old penny.
• What happens if you try to clean a nickel, dime or quarter?
Did You Know?
Pennies used to be made entirely of copper, but they stopped using it when the amount of copper in a penny started to be worth more than the penny itself!