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What is Zinc? Origin / Meaning of the name Zinc
The name originates from a derivation of the German words Zink,
Zinken and Zincum meaning "tooth-like, pointed or jagged" and it
is believed that these words were used in reference to the
metallic zinc crystals which have a needle-like appearance after
smelting.
What is Zinc? Periodic Table Group and Classification of the Zinc Element
Elements can be classified based on their physical states (States
of Matter) e.g. gas, solid or liquid. This element is a solid. Zinc
is classified as a
"Transition Metal" which are located in Groups 3 - 12 of the
Periodic Table. Elements classified as
Transition Metals are
generally described as ductile, malleable, and able to conduct
electricity and heat. Nearly 75%
of all the elements in the Periodic Table are classified as
metals which are detailed in the
List of Metals.
The
Characteristics and Physical Properties of Zinc
Physical properties
of Zinc can usually be observed using our senses or involve a
numerical measurement, such as determining its Boiling, Freezing
& Melting Points. The Physical properties of Zinc are it is a
solid, bluish-white, relatively soft shiny metal. It is neither
ductile nor malleable at room temperature, however, when heated
it becomes both ductile and malleable and it can then be rolled
into sheets.
The
Characteristics and Chemical Properties of Zinc
Zinc is a fairly reactive metal that will combine
with oxygen and other non-metals. Zinc metal tarnishes in moist air and
burns in air to form the white zinc oxide. It is a fair electrical conductor
and will react with dilute acids to release hydrogen. Zinc does not react
with water.
Facts about the Discovery
and History of the Zinc
Element
Zinc alloys have been used
since ancient times by the Ancient Egyptians, Asians, Greeks, Chinese and Romans.
Zinc was identified as a unique metal by the metallurgist Rasaratna Samuccaya
in 800.
In 1526 Paracelsus (1493-1541), a Swiss born German chemist was
the first to publish a reference to the metal as Zincum. In 1546
Zinc was recognized in Europe as a separate metal when the
German scientist Georg Agricola (1490 – 1555) observed that a
metal that he called “zincum” was produced in mines in Silesia
(a region which is now part of Germany and Poland).
In 1746 Zinc was isolated from
its minerals by
the chemist Andreas Marggraf (1709 - 1782) by heating calamine and
carbon. Antoine Lavoisier (1743 – 1794) listed of Zinc as an
element in 1787.
Facts about Zinc
Alloys
Gun-metal - An alloy
of copper and zinc
Ormolu - Alloy of copper, zinc, and tin which resembles gold
Bronze - Alloy of copper and tin
Brass - An alloy of two parts copper, one part zinc
What is Zinc? Occurrence of the Zinc Element
Occurrence. Zinc is not abundant in nature. Its compounds
have been found in many different countries, but it is not a
constituent of common rocks and minerals, and its occurrence is
rather local and confined to definite deposits or pockets. It
occurs chiefly in the following ores:
Sphalerite (zinc blende) ZnS.
Zincite ZnO.
Smithsonite ZnCO3.
Willemite Zn2SiO4.
Franklinite ZnO·Fe2O3.
Commonly obtained from zinc blende & calamine
Zinc is the fourth most common metal in use
Abundances of the element in different environments
% in Universe
0.00003%
% in Sun 0.0002%
% in Meteorites 0.018%
% in Earth's Crust 0.0078%
% in Oceans 5×10-7%
% in Humans 0.0033%
Important
use of Zinc - Galvanizing other Metals
One of the most important uses of
zinc is in galvanizing other metals because zinc resists corrosion. The
process of Galvanisation involves applying a thin layer of zinc on the
surface of a second metal therefore protecting other metals from corrosion.
Galvanized zinc is used in the manufacture of electric fuses, meter cases,
roofing, gutters and a variety of household objects.
Medical Uses of Zinc - Health and Treatments
Interesting information is contained in the following table of Medical Uses
of Zinc, Health and Treatments. Zinc is used to remedy deficiencies and to
prevent infections. It is used to treat a variety of disorders including
upper respiratory conditions, acne, anorexia nervosa, macular
degeneration, male infertility, and sickle cell anaemia. Zinc compounds are
used for a variety of uses including as an astringent and styptic, as a
nutritional supplement, skin protector, sunscreen and antifungal cream. The
medical uses of Zinc, associated health issues and disorders and treatments
using various preparations.
Associated Uses of Zinc
Die castings by the automobile industry
Used to form a wide variety of alloys
Galvanizing metals
Lining coffins
Electric fuses
Anodes
Rolled zinc is used as part of the containers of batteries
Zinc oxide is used in paints
Zinc chloride used as a deodorant
Zinc chloride used as a wood preservative
Zinc sulfide is used in luminescents
Medical use to treat rashes
Meter cases
Roofing
Gutters |