Facts about Gold - Properties and Uses

vellur By vellur, 18th Nov 2013 | Follow this author | RSS Feed | Short URL http://nut.bz/3t-p36af/
Posted in Wikinut>Guides>Science>Rocks & Minerals

Gold is a precious metal. Gold is used for making jewelry, coins and other art works. Gold is found in the earth’s crust as a stand-alone element or it is found mixed with other metals like silver. Gold is shiny, soft and can easily be molded into different shapes. Read on to know more.

An Introduction to Gold

Gold is a precious metal. The chemical symbol of Gold is “Au” with an atomic number 79. Gold is known since ancient times. It has been used to make jewelry since the Stone Age.

There are records of Gold used in Ancient Egypt 5000 years ago. It is a symbol of status and wealth. The name Gold is derived from the Anglo-Saxon word “geolo” meaning yellow.

Gold is found in the earth’s crust as a stand-alone element or it is found mixed with other metals like silver. It can also be found in sandy river beds.

Image Credit - old.irocks.com

Properties of Gold

Gold is shiny, soft and can easily be molded into different shapes.

It is a good conductor of electricity and heat. Gold is highly resistant to corrosion and rust.

Gold is highly ductile and can easily be stretched into a thin long wire.

This metal is heavy - it weighs over 19 times the weight of water and twice as heavy as lead.

Interesting Facts about Gold

Gold is a noble metal. A noble metal is a metal that does not corrode.

A single ounce of gold can be pounded into a sheet of 300 feet long by 300 feet wide – bigger than a football field.

Metallic gold has no smell or taste.

Pure gold is non-toxic and sometimes used as an additive in food items.

Gold is resistant to most acids.

A single ounce of gold can also be stretched to about 1000km long.

Gold can be flattened thin so as to let the light to pass through.

Gold flakes were sprinkled on food of the wealthy people in the Middle Ages.

South Africa was once the largest supplier of gold. Today China and Australia produce the highest amount of gold.

There are two main types of gold deposits – primary deposit and secondary deposit.
Primary deposits are gold deposits found inside a rock.

Pure gold is not used to make gold jewelry. Gold alloys are used to make gold jewelry.

Pure gold is very soft and malleable. Metals such as Copper, Silver, Platinum, and Palladium are added to gold to make it strong.

A deposit of gold is a concentration of gold in the same area or in the same rock formation.

Pure gold is not used to make gold jewelry. Gold alloys are used to make gold jewelry.
Pure gold is very soft and malleable. Metals such as Copper, Silver, Platinum, and Palladium are added to gold to make it strong.

The term “Karat” refers to the purity of gold. 24 karat gold is also called fine gold because it is 99.7 % pure gold.

Image Credit - i.investopedia.com

Uses of Gold

Gold is used for making jewelry, statues, coins and other art works.

Gold is used as a financial backing for currency. This gold is stored in the form of bars and is known as the “gold bullion”.

Gold is extensively used in the manufacture of electronics because it is a highly efficient conductor. Gold is used in connectors, switch and relay contacts, soldered joints, connecting wires and connection strips.

Gold is used in the manufacture of desktops and laptops.

Gold alloys are used in dentistry for fillings, crowns, bridges and other orthodontic appliances. It is used in dentistry because gold does not react chemically, it does not cause any allergic reaction and it is very easy to work on.

The radioactive gold isotope is implanted in the tissues of patients to treat certain type of cancers.

Gold is used in many ways in the NASA space vehicle.

Gold is used to make medals awarded to winners at the Olympic Games, Academy Awards, and Music Grammy Awards.

References
sciencekids.co.nz
bbc.co.uk
geology.com

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Tags

Chemistry, Education, Facts, Facts About Gold, Gold, Jewelry, Metals, Properties, Properties Of Gold, Science, Uses, Uses Of Gold, What Is Gold

Meet the author

author avatar vellur
Hi!! My name is Mrs. Nithya Venkat. Writing is my passion, nature my inspiration. I write about topics that interest me.

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Comments

author avatar Retired
18th Nov 2013 (#)

this article glittered literally

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author avatar avery sandiego
18th Nov 2013 (#)

Pure gold is non toxic it can be eaten?

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author avatar vellur
18th Nov 2013 (#)

writingforfun thank you.

avery sandiego pure gold is used as an additive in some food items.

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author avatar Fern Mc Costigan
19th Nov 2013 (#)

Nice post

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author avatar vellur
20th Nov 2013 (#)

Fern Mc Costigan thank you.

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author avatar Ptrikha
4th Jun 2014 (#)

A great writeup on Gold, its properties and usage.

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author avatar vellur
4th Jun 2014 (#)

Ptrikha thank you.

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