Реферат: The Chemistry Of Batteries Essay Research Paper
The Chemistry Of Batteries Essay, Research Paper
The Chemistry Of Batteries
People use batteries in their everyday life without thinking of their
impact. Batteries help us get around, keep in touch, have fun, and tell the
time. They do this by powering our cars, cell phones, pagers, portable CD
players, watches and many other useful tools. They can even save our lives
by powering things like smoke detectors, carbon dioxide detectors and
glucose meters. In this term paper I will discuss how batteries function,
what types of batteries exist, what gives them their power and many other
topics related to batteries.
The battery, also known as an electric cell, is a device that converts
the energy from chemicals into electricity. Chemical reactions that are able
to produce electrons are called Electro-chemical reactions. A battery
basically consists of two or more cells that are connected in a series or
parallel. All cells are made of a liquid, paste, or solid electrolyte and a
positive electrode, as well as a negative electrode. The electrolyte works as
an ionic conductor, this causes one of the electrodes to react. This reaction
produces electrons while the other electrode accepts the electrons. Every
battery has two terminals, one positive and the other negative. Electrons
collect on the negative terminal of the battery. If the negative and positive
terminal are connected together, then connected to whatever device that
needs to be powered, also called a load, the electrical current will flow freely
into the device.
The speed of the electron production by the chemical reaction is called
the battery s internal resistance. This controls how many electrons can flow
between the two terminals. Because electrons must flow from the battery
into a wire, and then must travel from the negative to the positive terminals
in order for the chemical reaction to take place. This is why batteries can go
unused for a year and still have plenty of power.
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