Batteries!!!

Do you ever wonder how double and triple AA batteries power you calculator, cellphone, DVD player and remotes? Most people like to these the things mentioned about working, but focus less on how batteries to what they do. First lets’ take a look at their history; most historians date the start of the development of batteries from the late eighteenth century. In 1938 Wilhelm Konig discovered a 5 inch pottery jar containing a copper cylinder that encased an iron rod in Iraq, he decide that it was a battery. One may think of a battery as a small power plant that converts a chemical reaction into electrical energy. Cadmium, lead, zinc, manganese, nickel, silver, mercury, and lithium. When disposed of in an unlined landfill, a battery can leach its toxic constituents and contaminate groundwater, resulting in possible exposure to humans. Batteries have three parts, an anode (-), a cathode (+), and the electrolyte. Both the negative and positive ends are hooked up to an electric circuit.

Oxidation and reduction reactions make a battery work. Oxidation and reduction reaction are electron transfer reactions; both of them must happen in order for a battery to work. One generates electrons at one electrode and the other uses them up at the other electrode. Oxidation is when electrons are transferred from a substance to oxygen or some other compound. Reduction is when a chemical reactant accepts electrons. It ends up with more electrons than it started with. The reaction at the anode releases electrons, and leaves behind positively charged ions. The cathode soaks up electrons.

If we did not have batteries, there would be wire connections everywhere because almost everything we use today has a battery. Cars, laptops, cell phones, and televisions are made to work by power and energy. Therefore we should be thankful of batteries because without them, we would not be able to control things that way we do.