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.
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
Properties
Density; 7140 kg
Poisson ratio 0.25
Mineral hardness: 2.5
Interesting Facts
Different parts of Zinc are used for different materials
USA and Canadian pennies are Zinc coated