This is a 5th grade elementary research paper for a science fair project about chemical reactions to test to see which chemical cleans a penny the best. The key concepts are chemistry ,acidity, chemical reactions, and oxidation. The paper can be about copper(color of the penny) and the different chemicals and their properties. The chemicals that are being tested is:
*Baking Soda
* Lemon juice
*Water
*Soy sauce
*Dawn Dish soap
*Distilled White Vinegar
*Ketchup
*Iodized Salt Water
*Hot Sauce
*Mustard
