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Aluminum

The aluminum (British Aluminium, U.S.A. Aluminum) is an element of atomic number 13.
The symbol of an element is Al.
It is often that aluminum and aluminum are called aluminum for short.
I am distributed in the form of the compound widely, and to be natural is one of the main elements forming the earth crust with silicon and oxygen.
The production in the simple substance is known for form called the natural aluminum, too, but is very rare.

Because the simple substance has good heat conductance / electricity conductivity by normal temperature ordinary pressure in metal of the silver-white, and property to being processed is good and is lightweight for practical use metal, it is wide, and it is used.
It is the metal which it is easy to be oxidized thermodynamically, but the inside is protected in the air by an oxidation film made on the surface.

The simple substance has good heat conductance / electricity conductivity by the normal temperature ordinary pressure.
Melting point 660.2 degrees Celsius, boiling point 2,060 degrees Celsius (there are 2,467 degrees Celsius, experimental value of 2,400 degrees Celsius).
The density is lightweight for metal at 2.7g/cm.
Aspect disposition lattice structure becomes the most stability at the normal temperature.
It is easy to be invaded by acid and alkali, but an oxidation membrane is formed on the surface in the air, and the inside is hard to become invade.
In addition, I produce an oxidation film on the surface for the concentrated nitric acid, and the progress of the reaction stops (passivity).
The oxidation film by the anode oxidation is invited to all alumite of them.

The aluminum dissolves for both acid and alkali in two different characters metal.
With the alkaline water solution, water is reduced to its elements by the following reaction and occurs with hydrogen.