Is there any chemicals, minerals, etc.? It's for a 3rd grade science project that my little sis is doing and needs that information. If anyone has a link or something that would be great. THANKS!
2007-01-21 11:26:23 · 5 answers · asked by Anonymous in Science & Mathematics ➔ Other - Science
Most batteries contain two or more componds that react "electrolytically", that is, the products of their reaction include excess electrons, or "current"...
2007-01-21 11:31:27 · answer #1 · answered by Anonymous · 0⤊ 0⤋
A reaction occurs inside the battery called an oxidation-reduction reaction. Usually the reaction is between two metals such as Nickel and Cadmium. The material undergoing oxidation loses electrons to the material undergoing reduction.
The electrons travel from the oxidation side of the battery through the circuit being powered to the reduction side of the battery. The voltage is dependent on the types of materials used. For example a much higher voltage can be acquired from a Lithium battery than a Nickel-Cadmium battery.
2007-01-21 21:47:03 · answer #2 · answered by LGuard332 2 · 0⤊ 0⤋
What happens is that, in a battery, there is a fluid that has lots of electrons. The positive and negative terminals each have a different ability to hold on to electrons. So the terminal that wants electrons more is the positive, and the other is the negative. However, the electrons in the fluid have to go through the negative wire to get there first, and that's what creates the current. It's possible to light up a lightbulb with salt water and two different types of metal wires!
2007-01-21 19:42:27 · answer #3 · answered by Minkis 1 · 0⤊ 0⤋
Most batteries these days have steel cases, and they're hard to cut open. If you locate a D cell that's wrapped in paper, then the dull gray metal can underneath is zinc. If you cut open the zinc can, the black powder inside is manganese dioxide, MnO2, moistened with ammonium chloride solution in water. The rod in the center is carbon. The zinc in the center loses electrons out through the bottom of the battery to light a flashlight. The electrons return from the flashlight bulb to the carbon rod, where they reduce the manganese dioxide.
2007-01-21 21:04:10 · answer #4 · answered by steve_geo1 7 · 0⤊ 0⤋
take a lemon and go to the hardware store buy a copper nail and a zinc coated nail, get something that will pick up voltage and show how current is made by placing 2 nails in lemon at different points. the acids and 2 types of metal will for a current.
2007-01-21 19:57:53 · answer #5 · answered by Earth to Mars 5 · 0⤊ 0⤋