Gold

Topics: Gold, California Gold Rush, Chloroauric acid Pages: 2 (652 words) Published: September 11, 2014
Gold

Gold is a very commonly used substance in today’s world, although it has been used by man since ancient times. Gold comes from the ground or from the ocean and must be mined but has caused major commotion since the early 1900s with people trying to get rich quick. You can find gold in some major regions of the world, but the most common places for gold mining are South Africa and a lot of US productions come from South Dakota and Nevada. The symbol for gold is Au for its Latin name Aurum rather than the English G. The atomic number is seventy nine but Gold has isotopes which are stable and radioactive. A stable isotope is 197 Au and there are 36 radioisotopes with 195 Au. Gold is a dense, shiny, ductile metal the most characteristic feature is that gold is a metallic yellow color which gives it the gold color. Because of the the color of gold it has become useful in the jewelry industry for thousands of years. Since pure gold is too soft to be applied to jewelry items alone most craftsmen will actually alloy gold with metals such as copper and silver to increase durability. Aside from jewelry, gold has many other uses such as our common technology today it’s in cell phones, calculators, global positioning systems and most other electronics we use day to day. The use of gold in technology is a highly efficient conductor that can carry the small currents that are highly reliable needed for devices. Other uses are in medical are the 198 Au is a beta emitter with range in tissue of about 11 millimeters with a half life of 2.7 days, this is used for some cancer treatments and other diseases threatening life. 198Au nano particles are now being investigated as an inject able treatment for prostate cancer. Gold is not toxic, but in small amounts there is a gold toxicity that is very well known for treating arthritis. A result of excessive consumption of gold is skin rash due to medical purposes. It does cause gastrointestinal distress some times as a result of...
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