Abstract+ICS17RamoS

Ever have a dirty coin that couldn't be identified? This project looks at which cleaning solution cleans best when the coin is tarnished or oxidized. Coins lose luster as a result of exposure to air or moisture, as a result the coin then deteriorates.The coins used in the project were six pennies, six dimes, six quarters, and six nickels. They were put in six different solutions including lemon juice, orange juice, cola, water, baking soda paste, and dish liquid. After leaving it soak overnight, there were some sides of the cup that turned blue because of the coin. After scooping out each of the coins, using a toothbrush, the coins were scrubbed and rinsed with water. The hypothesis was that the stronger the acidity of the solution, the better it will remove the tarnish off the pennies. The experimental results supported the hypothesis by showing that the coins put inside the liquids with high acid levels would clean the coins better. The experiment also showed that regular liquids with a low acid level did not clean the coin at all.

Abstract Ever have a dirty coin that couldn't be identified? This project looks at which cleaning solution cleans best when the coin is tarnished or oxidized. Coins lose luster as a result of exposure to air or moisture, as a result the coin then deteriorates.The coins used in the project were six pennies, six dimes, six quarters, and six nickels. They were put in six different solutions including lemon juice, orange juice, cola, water, baking soda paste, and dish liquid. After leaving it soak overnight, there were some sides of the cup that turned blue because of the coin. After scooping out each of the coins, using a toothbrush, the coins were scrubbed and rinsed with water. The hypothesis was that the stronger the acidity of the solution, the better it will remove the tarnish off the pennies. The experimental results supported the hypothesis by showing that the coins put inside the liquids with high acid levels would clean the coins better. The experiment also showed that regular liquids with a low acid level did not clean the coin at all. https://teeic.indianaffairs.gov/er/carbon/carboninfo/cycle/