What is Gold?What is Gold?

By Julia Ugras

What Are Elements?What Are Elements?Definition: An element is a specific type of atom.

I will be presenting the atomic structure, history and importance of Gold.

Gold’s AtomGold’s Atom

Protons: 79Neutrons: 119

Nucleus

Electrons (-)

Shell K

Shell L

Shell M Shell N

Shell OShell P

What is the Structure of Gold?

A gold colored metal, has six shells

79 Protons, 79 Electrons and 119 Neutrons

Atomic Weight : 197amu

Atomic Number: 79

Symbol: Au

What is the History of Gold?What is the History of Gold?

No one is attributed to discovering Gold

Believed to be discovered in 3,000 BC

( age of Egyptians)

Is over 5,011 years old

Oldest Gold jewelry is from 700 BC

Why is Gold Important?Why is Gold Important?

Jewelry

Electric Conductors

Dentistry

Decoration

Bowls

Vases

Electronics

Interesting FactsInteresting FactsTwo thirds of the Earth’s Gold is found in South Africa

Two thirds of the United States Gold supply comes from South Dakota and Nevada

One ounce of Gold can be beaten down to 300 square feet

Gold can be kept captive inside rocks

Conclusion Conclusion I learned lots of interesting information about Gold

Three main things that interested me

Gold is from the Earth’s crust

Amount of neutrons (119) Gold contains

Gold is over 5,011 years old

Gold is a very interesting and important element

Works ConsultedWorks Consulted"A Periodic Table of the Elements at Los Alamos National Laboratory." Web. 10 Dec. 2010.

“Elements." Chemical Elements.com - An Interactive Periodic Table of the Elements. Web. 10 Dec. 2010.

"Elements." Current Science. POWER Library. SIRS Discoverer. Web. 10 Dec. 2010.

"It's Elemental - The Periodic Table of Elements." Science Education at Jefferson Lab. Web. 10 Dec. 2010.

Knapp, Brian J., David Woodroffe, and David A. Hardy. Elements. Danbury, CT: Grolier Educational, 2000. Print.

"Periodic Table - Chart of All Chemical Elements." Lenntech. Web. 10 Dec. 2010.

“WebElements.” Periodic Table of the Elements. Web. 10 Dec. 2010.