Zinc
Matthew Stafford
Zinc
Symbol: Zn\
Atomic number 30
Atomic weight 65.38
Group number 12
Period 4
Color bluish grey
History
Zinc was found in Germany in 1764 by Andreas Marggraf
Zinc was also found in prehistoric ruins in Transylvania
The smelting of zinc ores with copper was discovered in Cyprus and then used by the romans
Uses
Used in:
Galvanized metal
dry batteries
brass
lightweight coins
ointments for medical purposes
insulin
Properties
Density 7.11g /cm
Melting point 420 degrees celcius
Boiling point 907 degrees celcius
Biology
Found in insulin and used to treat diabetes
zinc is used in ointments to treat skin conditons
Interesting facts
Zinc is essential to diets of plants an animals.
Zinc deficiency results in stunted growth
The penny is made of 97.5% zinc