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Lab Report: Penny Cleaning The Penny

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Lab Report: Penny Cleaning The Penny
In the Penny Cleaning Lab, my hypothesis, which stated that the lemon juice would be the best at cleaning the penny since it is an acid and acids are particularly good at cleaning metallic substances, was indeed valid. First, we started out with 1mL solutions of all the substances in the test tray. We dipped the pH paper in each solution for about a second and recorded the pH level for each substance. Before starting, we noticed that all the pennies were in some shade of brown, which I predicted this to be copper oxide. In order to make things as efficient as possible, we soaked two pennies at a time for three minutes for each solution and penny. After taking out the first two pennies, which were soaked in liquified Bon Ami and Tapatio Hot
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