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Fri, there is nothing comparable to this precious metal. It is a symbol of wealth and prosperity, the value for explorers and adventurers, and the temptation for conquerors. Today, it is essential to business and finance, it is very popular in decoration and it is getting increasingly technically important.

The nature of gold is diverse. The chemical element gold is heavy and soft metal. It weighs almost twice the weight of lead. Gold is a shiny, dark yellow, one of the two metals, it is not gray or white when it is pure. Gold is the most malleable metal

In normal condition (atomic weight number 197), gold is stable. However, there are radioactive (unstable) isotopes with mass numbers 186 to 196 and 198 to 203. Gold usually shows one or three chemical prices

Gold is "the most expensive", and precious metals (gold, platinum, palladium, rhodium) are inactive, or because they are less susceptible to chemical reactions, they are called precious metals. Gold does not react with common acids, but it attacks a 3: 1 mixture of hydrochloric acid and nitric acid. This combination is called aqua regulation because it reacts with so-called royal metal. Gold does not directly bond with oxygen, but it may indirectly form oxides. Gold is also bonded with halogen (fluorine, chlorobromo and iodine) and cyanide

The purity of gold is carat (KT), degree is expressed by 24 degrees, or purity is represented by 1,000. Pure gold is 24 carats or 1000 fine. Alloys containing 75% gold are written as 18K gold or 750 fine gold.

(Sanskrit Jval; Anglo - Saxon gold; L. aurum, gold) has been known since the earliest and is highly appreciated. Gold has been discovered in the natural world as free metal and telluride. Quartz or pyrite related

(Http://www.123helpme.com/view.asp?id=22703, Sterns, p.108) Once all the Romans united by a common religion. This religion is also called Roman religion and comes from the Greek religion. Even if not all, members of this religion, including most Roman citizens, worship many different gods, including the Creator and Father, Jupiter, God of the Sun, Apollo, God of War of Excitement, Mars, etc. doing. . As Christianity rose, the popularity of this religion began to decline. It appeals to most people, especially lower classes and slaves that have some hope and faith. This religion spread rapidly, and the Roman emperor believed it would be a possible threat as it was so influential. These leaders began to persecute Christians, but many Romans promised this religion and abandoned it as they thought it was the most important part of their life.

Http: //www.350.org - This is an international grassroots movement aimed at mobilizing global climate change calling for common actions. "350" means that scientists have set it to a safe climate carbon dioxide. Http: //www.1sky.org - This is an organization founded in 2007 that focuses millions of initiatives centered around the United States on one goal. In April 2011, 1sky officially merged with 350.org.