Aluminum
The Romans used various aluminum compounds as astringents; they called them alum. The earliest Romans and Greeks used alum as an acerbic in dyeing. Sir Humphry Davy and other chemists in the early 19th century recognized aluminum in 1825, but Friedrich Wohler had more success and is usually credited with its first isolation, in 1827. H.E. Sainte-Claire Deville first prepared inexpensive pure metal in 1854 and set about perfecting a process for its commercial production. Yet, in 1886 the process by which aluminum is produced today was discovered independently by C.M. Hall, a student at Oberlin College, and Paul Heroult, a French metallurgist. Aluminum is a silvery-white metal with a face centered cubic crystalline structure. It is a member of group IIIa of the periodic table. The symbol is Al; atomic number is 13; atomic weight is 26.98154; it’s state at room temperature, 298 K, is a solid. The electron configuration is [Ne]. 3s2.3p1. The Shell structure for aluminum is: 2.8.3. Aluminum is ductile, malleable, as well as an excellent conductor of heat and electricity. The metal is soft but becomes stronger and harder when alloyed. It is the most abundant metal in the earth’s crust; 8% by weight,
Aluminum is a very important element not only for the periodic table but also for our everyday life. There are also many more uses than that of which I have listed. In the third section of this paper I will discuss ten compounds formed from aluminum and give their formula. The first is 1) Sodium Aluminate the formula for this is Al2O2Na4. Sodium aluminate solution is an alkaline source of high-purity it is used for clarifying aid for raw-water and sewage treatment. It is also a pitch control and sizing agent in pulp and paper productions. It is manufactured in two forms, stabilized and un-stabilized. The next compound is 2) Aluminum borate the formula is AlBO3. This compound forms crystal structures and is a solid. The third compound is 3) Aluminum chloride AlCl3. The physical state is a white to gray powder. It reacts very violently with water. Next is 4) Aluminum hydroxide Al(OH)3. This compound is white or colorless with shades of gray, blue, and green. This is also in the form of a crystal. The next compound is 5) Aluminum nitrate AlNO3, the appearance of this compound is a white crystal and is a solid in its physical state. Next is 6) Aluminum oxide Al2O3; it is a solid in its physical state and highly variable. The color can be white or colorless, blue, red, yellow, green, brown, purple, and pink; there are also instance of color differences. Next is 7) Aluminum Phosphates AlH3O4P. This compound is also a solid and has a very fine texture. The next compound is 8) Aluminum silicate Al2O5Si. Aluminum silicate is a solid and is a polymorph with two other minerals; kyanite and sillimanite. The next compound is 9) Aluminum phosphide AlP5. This compound is used many times in solid form as a pesticide and is ill
Some topics in this essay:
Heroult French,
Al2O2Na4 Sodium,
Foil Aluminum,
Sulfate Al2SO43,
Edition Aluminum,
Ray Tube,
Al2O5Si Aluminum,
Sainte-Claire Deville,
Phosphates AlH3O4P,
Aluminum Romans,
sewage treatment,
sodium aluminate,
aluminum silicate,
1 sodium aluminate,
solid physical,
section paper,
white colorless,
compound white,
aluminum oxide,
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5 aluminum,
6 aluminum,
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Approximate Word count = 1175
Approximate Pages = 5 (250 words per page double spaced)
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