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4.06 - The Periodic Table of Elements

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Kelsey Mullis

on 26 July 2014

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Transcript of 4.06 - The Periodic Table of Elements

4.06 - The Periodic Table of Elements
The name of the element, including an explanation for the origin of its name if that origin is known.
Element: Gold.

The name 'gold' originates from 'geolo', (yellow), which is an Old English word. The symbol 'Au' originates from 'aurum', which is 'gold' in Latin.
The chemical symbol, average atomic mass, and atomic number for the element.
Chemical symbol: Au
Avg. atomic mass: 196.96
Atomic number: 79
A description of the element's position on the periodic table, including a list of other elements that have similar properties. (if any)
An interesting fact about the element.
Gold is the only metal that is yellow or "golden". Other metals may develop a yellowish color, but only after they have oxidized or reacted with other chemicals.

http://chemistry.about.com/od/gold/a/10-Gold-Facts.htm
Image by goodtextures: http://fav.me/d2he3r8
The number of valence electrons in a neutral atom of the element.
Valence electrons: 2
A description of where the element is commonly found in nature.
Gold can be found associated with quartz veins which are located in rock and granite.

http://www.mygoldpanning.com/wheregoldisfound.html
A description of how the element is commonly used by people and what properties make it appropriate for that use.
A list of five compounds the element can form.
A brief description of how the element was discovered, identified, and/or purified.
Gold can be used for jewelry, and is very commonly used. It is a good conductor of heat and electricity, and is unaffected by air and most reagents.

http://www.lenntech.com/periodic/elements/au.htm
Naturally occurring:

- Metallic gold
- Oxidation
Man-made:
- Gold trichloride
- Gold mecaptides
Both:
- Gold chloride
Gold is considered a metal like silver, platinum, titanium, sodium, and others. Gold shares physical properties on column 11 on the periodic table because it is also on column 11. The oxidation number is +2 like magnesium, calcium, etc.
When gold was first discovered, it was described as shining, yellow nuggets.
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