Better yet, scientists continue to work to make batteries that are even more convenient, are safer for people, animals, and the environment, and work better than those that you use every day. Could you imagine lifting a flashlight made of ten potatoes-with-electrodes and wires? Fortunately for us, scientists have figured out how to make batteries that are small, efficient, and light enough to carry. How many potatoes, nails, and alligator clips do you think it would take to make a flashlight bright enough to take camping? Whatever the number, it would certainly be more than could fit inside these devices at the size they are now. It is possible, although not exactly practical, to make a battery out of potatoes or lemons, and copper and zinc nails. These reactions, set up the situation for electrons to move and electricity to flow. Once the electrons traveled through the bulb, buzzer, or motor, and returned to the copper electrode, they were transferred to the electrolyte around it which reacted to release a small amount of hydrogen gas. The salts in the potato and acids in the lemon reacted with the zinc electrode freeing up electrons. The second role of an electrolyte is to chemically react with the electrodes to so that there are electrons that need to move. This pathway is why we can use electricity power our flashlights and phones. Instead the electrons must move from the zinc nail, through the wire, into one part of the bulb, buzzer, or tiny motor, out another part of the device, through another wire, and to the copper nail. The electrons made at the zinc nail cannot get to the copper nail by going through the potato. The first is that they block the flow of electrons between the two electrodes inside the battery. Vitamin C) inside of them.Įlectrolytes do two things within a battery. Lemons are good electrolytes because they have a combination of different acids, including citric acid and ascorbic acid (a.k.a. M.R.P: 499 499 (60 off) 10 coupon applied at checkout Save 10 with coupon. Potatoes make good electrolytes because they have salts inside of them. KETAKETI 50Pcs Metal Hair Clips/Pins Single Prong Metal Alligator Clips For Making Hair Bow, Flower Accessories & Other DIY Accessories white colour 45mm.As you discovered, certain pairs of metals work better than others. Electrodes must be made of different metals.In this activity, the metal nails are the electrodes, and the electrolyte is either the inside of a lemon or a potato. Batteries, including the one you made in this activity, have the same key parts-two electrodes and an electrolyte.
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