Did you know you could make your pennies shine by using a few ingredients from the kitchen?

Materials

* Dirty pennies

* Vinegar

* Salt

* Toothbrush

* Plate

Instructions

STEP 1: Mix the salt and vinegar in the plate.

STEP 2: Using the toothbrush clean the pennies with the salt and vinegar solution.

STEP 3: Rinse the pennies with water.

Explanation

Mixing the salt with the vinegar creates a small amount of hydrochloric acid. This acid removes the dirt from the pennies.

Jason Lindsey is a Science Outreach Educator with Hooked on Science. Check out his website "Hooked On Science" at hookedonscience.org for webcasts and experiments that might get you hooked on science. Send him your science questions at jlindsey@hookedonscience.org. More science experiments can be found at www.semissourian.com.