Super Scientist Madison taught Mrs. W’s class how to make old, dirty pennies clean and shiny by using white vinegar and salt. She took a mason jar and filled it with vinegar. She then added salt and dropped the penny in. She put the lid on and shook it pretty hard. The chemical reaction between the salt and vinegar ate away the dirt/grime on the penny. We each got a turn cleaning a penny and then got to take it home! Super fun experiment, Madison!