Saturday, April 13, 2013

Aluminium.

Intro: Aluminum or aluminium has an atomic number of 13. Its type is Al and it is located in group13 (IIIA), period 3.

History: The story of aluminium started out in England. The year was 1807 when a British scientist conjure upd Humphry Davy, detect a new unidentified piece in clay. He tried using electrolysis to isolate the element, scarcely he could all manage to create the white compound this element create with oxygen. He named it alumina.

In 1825 someone was finally able to isolate aluminum. His name was Hans Christian Oersted, and he was a Danish chemist. He recognize that mixing aluminum chloride with a mercury-potassium alloy, and strongly heating the mixture, would shake a tiny lump of the pure metallic element we now call aluminum. Unfortunately, this sample was too small for an investigation of its properties to take place.

In 1845, after many years of experimenting with different ways of isolation, a German scientist named Friedrich Wöhler finally produced grains of aluminum thumping enough to test the metals physical properties.

Ten years later, a Frenchman named Henri Sainte-Claire Deville entered a shiny piece of aluminum in the Paris Exhibition. catnap the Third was so impressed that he asked Sainte-Claire Deville to find a way of making the metal cheaply.

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Napoleon intended for his array to sport equipment made of this wonderfully light metal, but it was precise costly. This set scientists on the pursuit to manufacture aluminum economically, but no easy way could be found, and the metal became to a greater extent precious then gold. Napoleon is said to have had a set of aluminum cutlery made for his most honor guests.

Nowadays, aluminum is acquired from bauxite. Bauxite is an ore that has large quantities of a compound named alumina.

Characteristics:Aluminum is a soft, light, silvery metal. The...

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