1. By: Gerald Howse 5 th Hour 1-31-1

2. History Latin Name Aurum, originally called “shining dawn.” No one can really say who discovered Gold because gold has been around for thousands of years B.C. and some say even early as prehistoric times Egypt and especially Nubia had the resources to make them major gold- producing areas for much of history.

3. Description: Soft bright yellow transition metal. Boiling Point: 3080K, 2807°C, 5085°F Melting Point: 1337.73K, 1064.58°C, 1948.24°F Density:19.32g/cc @ 300K Conductivity: Electrical: 0.452 10 6 /cm Ω Thermal: 3.17 W/cmK Electron Configuration: 1s 2 2s 2 p 6 3s 2 p 6 d 10 4s 2 p 6 d 10 f 14 5s 2 p 6 d 10 6s 1 Electron Dot Formula: Au.

4. InformationGold - Au Type of Ion: Cat ion Oxidation States: 3, 1 Valence Electron: 1 Atomic Number:79 Group: 11 Period: 6 Transition Metal Isotopes: 18

5. OccurrencesHeath Benefits Native gold is also found in the form of free flakes, grains or larger nuggets that have been eroded from rocks and end up in alluvial deposits (called placer deposits) Gold Salt have anti- inflammatory properties and are used in the treatment of arthritis and other similar conditions Inject able Gold has been proven to help to reduce the pain and swelling of rheumatoid arthritis and tuberculosis. Gold Alloys are use in dentistry in tooth restoration(crowns & permanent bridges)

6. ReactionsProblems Pure metallic (elemental) gold is non-toxic and non- irritating when ingested Gold is chemically unreactive and exists in nature in its pure form. Gold Salt are toxic to the liver and kidneys Rare poisoning from Potassium gold cyanide Gold contact allergies have affected mostly women but is relatively non-potent when compared to Nickel

7. Gold Price There is really no set price, the price of gold fluctuates and continues to change It depends on the karat which is how pure the gold is 24 being the fineness Also it is weighed by 1 troy ounce = 31.1 grams worth $1340.60

8. Uses Of Gold Jewelry Gold Flakes (food) Thread Coloring Agent (Cranberry Glass) Reflective Layer On Cds Protective Coating (Satellites) Automobiles (Heating Dissipation) Gold Toners (Photography)

9. Symbolism of Gold SymbolismRepresents Gold has been highly valued in many societies throughout the ages Ex: Golden Medals awarded in athletic competitions and trophies (Olympic Games, Nobel Prize, & Gold Globe Awards) Power Strength Wealth Warmth Happiness Love Hope Optimism Intelligence Justice Balance Perfection Summer Harvest Sun

10. Bibliography http://environmentalchemistry.com/yogi/ periodic/Au.html http://environmentalchemistry.com/yogi/ periodic/Au.html http://en.wikipedia.org/wiki/Gold www.periodictable.com www.chemistry.about.com www.webelements.com Class textbook