The Silver Lining

The D-glucose serves to reduce the silver from Ag1- to Ag1+. The sodium citrate first reduces Ag1+ to Ag, and then functions to bind with the particle surface of silver nitrate particles to allow them to interact. Finally, silver nitrate can aggregate. The silver nitrate combined with D-glucose, sodium citrate, and heat forms an aggregate. The citrate binds with the particle coating and dispels the repulsion between silver nitrate nanoparticles. The nanoparticles then form an aggregate-- a loose…

Social and Environmental Impacts of the Gold Commodity Chain Gold’s unique qualities make it one of the most sought-after commodities in the world. Even in antiquity, gold was praised for its luster, shine, and beauty and was cast into jewelry and was widely regarded as a luxury item. Its inherent scarcity gave gold value and it became a symbol of status and wealth because those who could afford to frivolously spend on jewelry were well-off. In some societies, it even became a currency, shaped…

Gold is widely used in modern day medicine to treat disorders. This is because gold is very resistant to bacteria. Bacteria are microscopic single-celled organisms. Bacteria are prokaryotes, meaning the entire organism consists of a single cell with a simple internal structure. The DNA of a prokaryote is neatly packed in the nucleus. The bacterial DNA floats freely in a twisted thread-like mass called the nucleoid. Gold is unaffected by almost everything. The only materials that can affect gold…

One of the earliest metals to be discovered, lead has a long history with mankind. It was first discovered around 7000 BC as a byproduct of silver smelting. Lead is metal known for its resistance against corrosion, malleability, and low melting point. Mined all across the world, lead was one of the most important metals in ancient times. Although lead was toxic, it was used widely, particularly in the Roman Empire. Through its uses and toxicity, lead affected the classical era in a drastic way.…

A polymer is a large molecule which is formed by repeated linkage of small molecule called monomers. Conducting polymer have been the subjects for many decades as possible synthetic metals. Many of these polymer, especially those with a conjugated pi-bond system ,often yield higher conductivity once having undergone the doping process. Polymers are typically insulators due to their very high resistivity .Insulators have tightly bound electrons so that nearly no electron flow occurs ,and they…

million troy ounces of silver are mined yearly? That is equal to more than 46,011,428 pounds of silver! The word silver comes from the Anglo-Saxon word seolfor. Along with the words purple and orange, there is no word in the English language that rhyme with the word silver. Silver is a metallic metal with the atomic number of forty-seven, out of the 118 elements on the periodic table, silver is the best reflector of light. Prior to 1965, all U.S. coins were about 90% silver. History…

importantly, this is the moment where Mare falls into the electric field which sustains her from dying. The electricity from the arena induces the inside of her, resulting in her precipitating her ability to control lightning in a room full of Silvers. Red in the Head, Silver in the Heart (Chapter 8): This is the moment she meets Lucas Samos, the king, Elara, and Maven, her future betrothed. The king describes her as poor, rude, immoral, unintelligent, impoverished, bitter, stubborn, and a…

occasionally during the 19th century. Platinum was only occasionally used because it’s too hard to be formed in to a foil. [2] Silver was a popular filling also during the 19th century but like platinum was hard to be used. Both silver and platinum are less malleable then gold is. [2] Amalgam has been used for many years and is still used today. During the civil war silver, tin, mercury fillings were mostly used. This material was placed where the gold couldn’t fit also. Amalgam when set is…

Case citation: Gendron v. Supply and Services Union of thhe Public Service Alliance of Canada, Local 50057, [1990] 1 S.C.R. 1298 Facts: The respondent started to work at the Royal Canadian Mint in 1979 as an operator. At the time when he was hired he already had experience as a tinsmith and electrician's helper for 1 year and ½. Both as an operator and in his prior occupations he has been a member of the union and thus subjected to the collective agreement. The Royal Canadian Mint poster a…

Blue People: Family of Troublesome Creek Martin Fugate and his wife Elizabeth Smith moved onto the bunks of Troublesome Creek, an area in Appalachian Kentucky. Martin and Elizabeth together had seven children. The family tried to hide out in the mountains because of the blood disorder that they carry with them. The blood disorder makes their skin turn blue. The blood disorder of how and why the family’s skin turns blue. Some facts about the blue people of Kentucky. The family has lived in the…