Pennies, lemons, and nails combine to convert chemical energy into electrical energy.
Voltaic batteries of all shapes and sizes are devices that convert chemical energy into electrical energy. You probably use batteries to power your cell phone, iPod, or any number of other gadgets. But, you can actually use chemical energy stored in a lemon and two metals to make a current and light up a small LED. It’s true and we’ll show you exactly how it’s done.
EXPERIMENT MATERIALS
Four lemons (the bigger, the juicier, the better)
Four pennies
Four zinc-galvanized nails
Five sets of alligator clips
Mini-LED
Kitchen knife