Introduction: The purpose of this lab was to utilize roasting, smelting, spectroscopy, and the carbonate test in order to determine the identity of an unknown copper mineral. I determined that the most useful of these tests in determining the mineral was roasting because it provides a fairly accurate percent composition of copper in the unknown mineral.
Results: The purpose of performing the variety of tests that we did was to give more accurate results of what the unknown mineral was. By roasting the copper mineral, we obtained copper(II) oxide. This new sample came out of the crucible grayish-black. It was very brittle and full of cracks. This provided the percent composition that was necessary in finding the unknown mineral. When performing
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The small sample fell apart after the roasting process, making it hard to separate from the charcoal. Also, I think allowing more time to let all the copper(II) oxide be smelted would have increased the accuracy of our results.
References:
Blacksmith Institute. "Metals Smelters and Processing." WorstPolluted. Blacksmith Institute, 2008. Web. 14 Sept. 2015.
Charles, James A. "Metallurgy." Encyclopedia Britannica. Encyclopedia Britannica, Inc., 10 Mar. 2014. Web. 13 Sept. 2015.
Evers, D. J., B. Hendricks, G. Lucassen, and T. Ruers. "Optical Spectroscopy: Current Advances and Future Applications in Cancer Diagnostics and Therapy." NCBI. National Center for Biotechnology Information, 8 Mar. 2012. Web. 13 Sept. 2015.
"Mineralogy Database." WebMineral. David Barthelmy, 15 Sept. 2012. Web. 14 Sept. 2015.
Olson, Maynard V. "Oxidation-Reduction Reaction." Encyclopedia Britannica. Encyclopedia Britannica, Inc., 27 Jan. 2014. Web. 14 Sept. 2015.
Nivaldo J. Chemistry: A Molecular Approach. 3rd ed. Upper Saddle River, NJ: Pearson Education, 2013. Print.
Documentation: Worked with my lab partner, Joey LaPiana, in order to complete the lab and verify data and
Copper is mainly found in the ore chalcopyrite (CuFeS2). Bornite, covellite and chalcocite other other sources of copper. Sulphides that contain the most copper are found deeper within an iodes, with weathered copper found near the surface of a deposit take the form of oxides and carbonates. These usually obtain the charactistic green/blue colour that copper is known for (Australia, 2016).
Did you know the Statue of Liberty is made of copper? The Statue of Liberty is not originally green, it was a dull brown colour but turned green from many years of oxidation.Copper (Cu), Copper’s atomic number is 29 and has the atomic weight of 63.546.Copper is a mineral and an element essential to our everyday lives. It is a major industrial metal because of its high ductility, malleability, thermal, electrical conductivity and resistance to corrosion. It is an essential nutrient in our daily diet. And, its antimicrobial property is becoming increasingly important to the prevention of infection. It ranks third after iron and aluminum in terms of quantities consumed in the USA.Copper has the melting point of 1,981° F (1,083° C) and a boiling
To extract copper from the ores, which is a group of minerals, from which a valuable material can be pulled out for economic benefits, workers in the Chuquicamata mine mainly use two metallurgy processes: Smelting and Electrolysis. First and foremost, the ores are heated with carbon as the matter of fact that copper is a reactive element. For the smelting process, smelters use blast furnaces in the mine. Copper matte, which is a mixture of copper, iron and sulfur that is enriched in copper, is the product of this process. Subsequently, the impure copper is purified by electrolysis in which the cathode is pure copper, the anode is impure copper, and the electrolyte is a copper sulfate solution. To be more specific, pure copper, which is purified
Copper is a chemical element that has the symbol Cu and atomic number 29 (Copper Development Association of South Africa, 2017). The element possesses a wide range of properties that make it invaluable for many different applications. It is an excellent conductor of heat and electricity, as well as being very malleable and ductile. Copper also has excellent alloying properties and is resistant to corrosion (Geoscience Australia, 2017). Copper mining is a large industry in Australia, but the industry is under scrutiny for negative impacts on the environments caused by mining.
Both the modern and ancient way of extracting copper from malachite involves the heating of the malachite with a form of carbon (pure carbon and Charcoal). The carbon involved is more reactive than the copper and a displacement reaction occurs, this happens in both methods; however the ancient method could not see the copper meet a truly molten state for some time, whilst the modern method can.
The ore now contains around 30% copper and it is ready to be smelted. This ore is called “concentrated ore”
Copper, Cu, is the 29th element in the periodic table and has 29 protons. Its mass number is 63.55. It is a transition metal in the middle of the periodic table. The symbol for copper is "Cu", which comes from the Latin word cuprum, which came from the Latin word for the island of Cyprus, where copper was found. Copper can be found as a metal in the ground. It is found in small amounts in living things. Some mollusks and arthropods have blue blood because they have copper in their blood. Copper may be the oldest metal in use, as ancient copper tools have been found. Copper is used in electrical wiring, it’s also what the Statue of Liberty is made of. Copper does not corrode and is not as toxic as a metal. Copper compounds are toxic though,
The usually levels of copper in some feed materials by using an indication of the copper content of the most feed materials. The most usually practice source of copper is copper sulfate pentahydrate. It also called “bluestone” which is a bluish colored mineral salt. The percent contains in copper sulfate is 25% of copper. Copper is an essential trace element that plays a vital role in the physiology of animals especially for fetal growth and early post-natal development. It also function as hemoglobin synthesis, connective tissue maturation especially in the cardiovascular system and in bones, for proper nerve function. Then it also help in bone development, and inflammatory process. The inclusion of up to as much as 0.1% copper sulphate in
Copper with atomic no.29 and atomic weight 63.546 amu is a chemical element presents in d block elements with electronic configuration of [Ar] 3d10 4s1. From the Latin word for Cyprus "Cuprum", the word copper is derived.almost there are 29 isotopes of copper. After gold and iron copper is known as the third element used by human .minerals of copper are cuprite, malachite, and azurite. Brass, bronze and cupronickle are an alloy of copper with other elements.Copper is an excellent electrical and thermal conducter and has also excellent corrosion resistance. It’s a ductile and malleable metal.copper has excellent workability as it can be molded without cracking. . Copper is used in coins and is also present in TVs, electrical wirings, dryers
Copper does not decompose in the environment, and because of this it can accumulate in plants and animals are in the soil. Because of the serious impact on plants that Cu metal is a serious threat to agricultural land, depending on the acidity of the soil and the presence of organic matter. When farmland soil polluted with copper, animals will absorb concentrations that are harmful to their health. Mainly sheep suffer a great deal from copper poisoning, because the effects of Cu are shown at fairly low concentrations. Cases of mass animal diseases recorded in livestock farms located near industrial sites, polluting particles of copper compounds in aerosol form. Pollution copper-compliance with the rules of use of preparations of copper in plants,
According to the periodic table, Copper is the 29th chemical element. That is because of its increasing atomic number and mass it possesses. The origin of copper the chemical element has been around Before Christ (BC), which insinuates that this element is one of the oldest that predates time. What I find surprising is that there are no debates that surround who can establish credit for such a discovery of such and an astounding metal. However, history has demonstrated that the Egyptians civilization used this metal to create the ankh, money currency, kitchen utensils such as dishes, hoe for plowing fields, and trade such a metal with other empires, and countries. In the same fashion, China the country constructed tools and weapons out of
The determination of the amount of copper in a penny involves multiple scientific concepts that are extremely important. First, the experiment involves a redox reaction of Copper and Zinc. Copper and zinc are both components of a penny and the oxidation reaction utilizes nitric acid, a very strong oxidizing agent, in order to oxidize both copper and zinc. The reaction generates a highly toxic, brown gas which is nitrogen dioxide (NO2), but more importantly, it results in the complex ions of copper and zinc. The complex ion generated of copper is Cu(H2O)42+ and has a dark blue hue while the complex ion generated of zinc is Zn(H2O)42+ and does not have a distinctive color. Essentially, a complex ion is formed by having a central metal ion that has formed covalent bonds with multiple ligands, which are simply anions. Furthermore, the Beer-Lambert Law establishes a relationship between light absorption and solution concentration by claiming that the concentration of a certain solution is directly proportionate to the total amount of light energy that the compound present in the solution can absorb (The Beer-Lambert). A spectrophotometer can be utilized to measure how much light energy of a certain chosen wavelength is absorbed by a particular sample.
The copper was then transferred to a watch glass and washed twice with 5 mL methanol before this liquid was also decanted. The copper was then dried by placing the watch glass over a beaker of boiling water. The dry copper was cooled and weighed, resulting in a final weight of 0.58 g. Results and Discussion: Table 1: A summary of the observations for each reaction within the copper cycle. Reaction Observations Cu → Cu(NO3)2 Copper: bright copper coloured, shiny metal. HNO3: clear, colourless solution.
Copper, dating back almost 10,000 years, is the first metal to ever be used by man. It was thought that copper could replace stone on weapons and tools during prehistoric times, but was then discovered that the malleable metal, was too soft to be used for such purposes, so instead was used in pottery in North Africa. Leading to the Bronze Age, 5,000 years ago, people learned that, if mixed with other metal alloys such as bronze or brass, copper could be strengthened. For centuries onward, these alloys were used to make tools, weapons, and armour until 1200 B.C when the Bronze Age ended. During the invention of the telephone in the 1870’s, the need for copper grew as large quantities of copper wire for the electric power grid were being utilized.
Copper, Cu, is the natural solid form of copper with an Isometric crystal system. It is found as copper red on a fresh surface, dull brown or green on a tarnished surface with metallic luster and metallic copper red streak. The natural copper is soft and malleable at 2.3-3 on moh’s mineral scale. Copper nuggets in pure state have been found in Arizona, abundant in Keweenaw Peninsula in northern Michigan, and also found in Canada, Australia, China, Namibia, Bolivia, and Russia. Copper is mined or extracted as copper sulfide in an open pit mine. Taken in large equipment to be cleaned in steam and melted dried and cooled in molds to solidify and then sent off to be used as copper products. (Understanding Minerals and Mining through Education).