Brittany Crone Zinc. A metallic chemical element Also known as speter Symbol is Zn Atomic number 30.

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Presentation transcript:

Brittany Crone Zinc

A metallic chemical element Also known as speter Symbol is Zn Atomic number 30

In some ways chemically similar to magnesium 24 th most abundant element in the earth’s crust

Deposits Largest exploitable deposits are found in – Australia – Canada – United States – Asia

Zinc in the US

Ore Most exploited zinc ore is sphalerite – a zinc sulfide

It is found It is found in: – Water – Soil – Air – Food

Zinc Production Froth Floatation of the ore Roasting Final extraction using electricity

Old uses for Zinc Brass – cooper and zinc (since 10 th century BC) Unknown to Europe until 16 th century but was used by Alchemists who burned it in air to form “philosopher’s woo!” “Zinc Chloride”

Major Applications Corrosion- resistant zinc plating of steel (hot- dip galvanizing) Batteries Alloys such as brass

Zinc carbonate and glucomate (dietary supplements) Zinc chloride (deodorants) Zinc pyrithione (antidandruff shampoos) Zinc sulfide (luminescent clothing)

Bronze Various soldiers Nickel silver Galvanizing iron and other metals

Electric fuses Anodes Roofing Gutters Various household objects

Environmental Issues In children is causes – Growth retardation – Delayed sexual maturation – Infection susceptibility – Diarrhea

Contributing to the death of about 800,000 children world wide per year