Make a Tomato Battery You can produce electricity with two metal strips and a tomato! Hear the electricity crackle using a pair of headphones. We used a ripe red tomato from a grocery store, although green tomatoes will work even better, as they are more acidic. This experiment is most impressive with metal electrodes, but many different kinds of metal will work.

Try using a piece of copper wire (or a penny made before 1982), and a paper clip or galvanized nail. Although we suggest using alligator clip leads because they are easier to connect, any insulated copper or electrical wire will work well. What You Need: • Medium to large tomato • Kitchen knife and cutting board • 2 (or 4′ lengths of copper wire) • 2 (or large paper clips) • 2 or short glasses • 4 • Headphones What You Do: • Cut the tomato in slices, then cut each slice into smaller pieces. Put half the chopped tomato (including seeds and juice) in each beaker. Mash the tomato pieces with a spoon to make a pulpy mixture.

• Insert a copper and zinc electrode into each beaker, making sure that they do not touch. You have now made two battery cells! Set one beaker aside for the moment.

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• In the remaining beaker, clip one wire lead to the zinc electrode and another to the copper electrode. • Hold the headphones near your ears, then touch the loose ends of the wire leads to the metal end of the headphone cord. If you look closely at the headphone plug, there will be several sections. The Settlers 7 Offline Crack Mac And Cheese there. Try touching the wires to different sections until you can hear the crackle of electricity that is being produced by your tomato battery cell. What Happened: The noise you heard was caused by the flow of electricity through the wires. This electricity was created by the reaction of the tomato pulp and metal.

The zinc reacts with the acid in the tomato, and tiny particles with a negative charge ( electrons) are set loose into the tomato juice. These negative electrons are pulled toward the copper electrode, which has a positive charge.