Zinc

By: Mackenzie Mooney

Basic Information

Name; Zinc

Symbol; Zn

Atomic Number; 30

Atomic Weight; 65.38

Group; 12

period; 4

color; bluish pale grey

classification; metallic

History

Between 1400-1000 zinc ores were used for making brass.



Found in Palestine.



Smelting of zinc ores with copper was discovered in Cyprus, later used by the Romans.



Metallic zinc was produced in the 13th century in India.



Rediscovered in in Europe, William Champion set up a zinc industry in Bristol.



An alloy containing 87% zinc was found in prehistoric ruins.

Uses

Alloy brass


Used to galvanize metals to prevent corrosion


Used in dry batteries


Roof cladding


Sacrificial anodes


Lightweight coins


Paints


Rubber products


Cosmetics


Pharmaceuticals


Plastics


Printing inks


Soap


Textiles


Electrical equipment


Ointments


Luminous dials


x-rays


tv screens


fluorescent lights

Floor coverings


Plastics


Printing inks


Soap


Textiles


Electrical equipment


Ointments


Luminous dials


x-rays


tv screens


fluorescent lights

Floor coverings


Description

Not toxic, an essential element in the growth of all plants and animals


Has 30 electrons


Tarnishes in moist air


Does not react with water


Biology in humans

33000 ppb by weight


Human skin irritant


geology

The universe has 300 ppb


The sun has 2000 ppb


Meteorites have 180000 ppb


Sea water has 79000 ppb


Streams have 10 ppb

Properties

Density; 7140 kg


Poisson ratio 0.25


Mineral hardness: 2.5


Molar volume: 9.16 cm3

Interesting Facts

Different parts of Zinc are used for different materials


USA and Canadian pennies are Zinc coated

Big image
Big image