Today in this experiment I am going to tell you how to get dirty/rusted coins and turn them into new fresh shiny coins.Its really simple but yet really cool experiment to learn.
What you need
a few old coins (which aren’t shiny)
Add 1 teaspoon of salt to 1/4 cup of vinegar.
Place old dirty coins into the bowl.
Wait for 20 seconds and then take the coins out and rinse them in water and dry them with your paper towels.
They should be now be shiny and clean!
Why? Vinegar is an acid and the salt reacts with the acid in the vinegar which removes the copper oxide that was making your coins look dirty.