Electrum

Husein Al-Rousan

What the alloy is made of and the percentage of each materail

electrum is made of 20-80% gold and 20-80% silver and has traces of copper, nickel, zinc

http://dictionary.reference.com/browse/electrum

How the alloy was dicovered

electrum is naturally occurring and is from around 350 BC

https://www.google.com/#safe=strict&q=how+electrum+was+discovered

How the alloy is manufactured

electrum is a natural occurring so it is not manufactured

https://www.google.com/#safe=strict&q=how+electrum+was+discovered

what is the cost of the alloy

electrum is sold in vases and jewelry the price ranges from $170-$640

https://www.google.com/?gws_rd=ssl#q=what+is+the+cost+of+electrum&safe=strict&tbm=shop

three physical properties of the alloy

1. The color varies from yellowish-white to pale yellow depending on the amount of silver present in it.

2. This metal is insoluble in water.

3.: The average density of this substance is somewhere between 12.5 gm/cm3 and 15 gm/cm3.

http://www.chemistrylearner.com/electrum.html

three chemical properties of the alloy

1. It is odorless

2. not flammable

3. tarnishes

http://chemistry.about.com/od/metalsalloys/fl/Electrum.htm

What is the alloy used for

Electrum has been used as currency, to make jewelry and ornaments, for drinking vessels, and as an exterior coating for pyramids and obelisks.

http://chemistry.about.com/od/metalsalloys/fl/Electrum.htm

Electrum

interesting fact about alloy

In the modern world, the primary source of electrum is Anatolia. Smaller amounts also may be found in Nevada, in the USA

http://chemistry.about.com/od/metalsalloys/fl/Electrum.htm