Precious Metals Research Paper

For example, silver nitrate formed a white precipitate when it was tested with ammonium chloride. In contrast, unknown 3 did not formed any precipitate with ammonium chloride. Ammonium chloride change the color of unknown 3 to a light green while the solution of silver nitrate and ammonium chloride was cloudy white solution. Likewise, the metal in unknown 3 could have been Calcium neither. Data and observation shows that calcium nitrate whether formed a white precipitate or did not react at all while unknown 3 formed an orange precipitate. Therefore, silver and calcium are not the two metal present in unknown

The unknown contained silver, as both the unknown and silver solutions turned red and formed red precipitates with the addition of potassium chromate.

Copper is formed by the melting and cooling of molten rock and found fairly close to the Earths’ surface, alongside with silver it has sulphite within the ores as they are created in brine which is a boiling salty water deep within the Earths’ crust and then pushed up through ocean vents and create a chimney like effect. Gold is formed through Hydrothermal-hot water-fluids of which are extremely rich in sulphur and found generally near or in

The elements were organized by Dimitri Mendeleév. He organized them by properties (columns), groups (horizontal), and atomic number (the number of protons and electrons). This became known as the Periodic Table. And currently there are 118 elements. He also found gaps in which elements that were yet to be discovered were to go, three of these unknown elements were found and identified in Mendeleév's lifetime. The elements today are used in everything and 75% of the 118 elements are metal.

William Crow Jewelers is a jewelry designer that is located in Denver, Colorado. This company was founded in 1924 by William “Bill” Crow. Their products and services include jewelry and watch repair, loose stones, and giftware. William Crow Jewelers also offers fine jewelry, estate and consignment jewelry, and watches. They are a BBB accredited business with an A+ rating. William Crow Jewelers has been recognized as the Denver A List, Best Designer Jewelry.

Government agencies are just protecting themselves and don’t care about the Native American communities or people! Gold King Mine was an abandon gold mine, which stored mine waste water for many years and neglect by Environmental Protection Agency (EPA) has led to (the Environmental disaster of 2015.) The waste water stored was of heavy metal rust, Lead, Arsenic, Cadmium and Copper. Which was breached during an excavation of the mine, “…excavating above the old adit, pressurized water began leaking above the mine tunnel, spilling about three million gallons of water stored behind the collapsed material into Cement Creek” (Environmental Protection Agency), on August 5, 2015, at Gold King Mine near Silverton,

1. Suppose you find a yellow piece of metal in a stream. How could you tell if it is real gold?

In well 3A there was a chemical reaction between the sodium phosphate and copper sulfate. There was a light blue precipitate formation which proves there was a chemical reaction.

Platinum was first discovered by a man named Julius Scaliger. Julius Scaliger first discovered Platinum in an Inca village in 1577. Julius wrote the first written account about platinum. In 1735, Antonio de Ulloa, a spanish explorer encountered platinum with the Incas. Antonio de Ulloa decided to start to study the new element. It was recognized as an element in 1735, not 1577. Scientists now know that Incas started using platinum in hieroglyphics hundreds of years before any european explorer “discovered” it. Platinum currently is almost as rare as gold, but less valuable. It is currently found in South Africa, Canada, United States, and Russia. Platinum is extremely rare to find by itself, but is found as a byproduct

Aluminum is made from extracting aluminum oxide from bauxite. Traces of aluminum have been found as far back as 5300 BC, in ancient Persia strongest clay cooking vessels. In the early 1800s Sir Humphrey Davy was the first to establish its existence, and name it. Around ten years later a French scientist found red clay that contained large amounts of aluminum, which was called Bauxite. Aluminum never occurs naturally in nature; even today no one has ever found pure aluminum. In 1825 a small

Is the recycling of electronics (e.g. mobile phones) a more economically viable method of sourcing rare earth metals than mining?

The German alchemist, Albertus Magnus from the 13th century, is the man who is known for first identifying Arsenic. Being number 33 on the periodic table, arsenic falls inside the metalloid line because of its characteristics. According to the Green Facts website “Arsenic is a naturally occurring element that can be found in the Earth crust.” (Arsenic n.d.) It

The way phosphorus was discovered I find to be interesting. Henning Brand a German in 1669 was conducting an experiment using urine to turn into philosopher's stone that can turn certain metal into gold ("The Element Phosphorus." It's Elemental -. Web. 23 Dec. 2015. ) He then isolated a white material that glowed and little did he know that it was white phosphorus. Phosphorus is represented by the letter P on the periodic table of elements. It in group 3 and its atomic mass is 15. It is part of the pnictogen family. It general classification is non-metal.

Sterling silver is a combination of silver containing 92.5% by mass of silver and 7.5% by mass of different metals, like copper and other. The sterling silver standard has a base millesimal fineness of 925. When we talk about fine silver it is of 99.9% pure which is soft and shiny in quality. It is used for making various types of silver jewelry, coins and many other precious objects.Sterling silver is quite different form pure silver. It contains 92.5% silver and the rest are other metals used in it to make something. The silver is generally alloyed with copper to give it quality while protecting the pliability and appearance of the valuable metal. It is originated in Europe as early as the 12th century in the area that is now northern Germany.

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