Many ores contain valuable metals that can be extracted and used for construction, infrastructure, and more. Extraction is a technique that allows large pieces of ore to be broken down into pieces small enough for the valuable metal to be removed. Metal extraction is extremely important technique because the metals inside ores have special properties such as strength, durability, malleability, and ductility. 1 Iron, copper, aluminum are a few examples of widely used metals that are commonly extracted from their ores. In this experiment, copper was extracted from one of its ores, malachite. Since the beginning of time, metals have played a vital role in hunting, farming, and crafting tools.2 Around 7000 BC, people began to shape copper into …show more content…
The chemical reactions can be found below in Table 2.8 The amount of copper metal extracted from the 0.9899 g sample of malachite was measured to be 0.5682g. The theoretical yield of copper metal was calculated to be 0.5690 g. The percent yield was calculated to be 0.135%. The sample calculations for theoretical yield and percent yield can be found after Table 3. At the conclusion of heating the malachite, the hammer test and the resistance test were performed on the samples of copper to test their physical properties as compared to pure copper metal. The hammer test was performed to see if the sample was malleable since pure copper can change shape easily when force is applied. When the large pieces of malachite were struck with the hammer, they crumbled into smaller pieces and flaked off in layers. The small pieces of copper changed shape readily and were soft in texture. The resistance test was performed to gauge the purity of the copper metal. Pure copper metal should have little to no resistance when tested with a multi-meter because it conducts electricity easily. The readings were taken at various locations on a sample of malachite and were as follows: 43.17Ω, 11.0 Ω, 23.7 Ω. The average value was 26.0
An error that could have been present during the lab includes not letting the zinc react completely with the chloride ions by removing the penny too early from the solution. For instance, the percent error of this lab was 45.6%, which was determined by the subtraction of the theoretical percent of Cu 2.5% and the experimental percent of Cu 3.64% and dividing by the theoretical percent of Cu 2.5%. This experiment showed how reactants react with one another in a solution to drive a chemical reaction and the products that result from the
Cadet Eric Wiggins Date: 18 September 2014 Course Name: Chem 100 Instructor: Captain Zuniga Section: M3A Identification of a Copper Mineral Intro Minerals are elements or compounds that are created in the Earth by geological processes. The method of isolating metals in a compound mineral is normally conducted through two processes.
The purpose of this lab was to be able to use physical characteristics to determine the identity of an unknown compound. The data from this experiment classified aluminum as metallic; ascorbic acid, paraffin, palmitic acid, sucrose, graphite, and water as molecular; sodium chloride as ionic. In order to determine this, 3 tests were conducted. The first test was to test the conductivity of each substance at room temperature. In this test, only graphite and aluminum conducted.
The quantitative solubility of the unknown compound was determined to be 29/100ml. The known solubility of sodium sulfate is 28.11g/100mL water. Using the found solubility to compare to the known solubility of sodium sulfate. This solution created in the solubility test, the conductivity of the unknown compound was tested using an Ohmmeter to measure the resistance of the solution. Resistance is the measure of a substances ability to conduct
Copper is also a very important element in the medical field. Also, the united states penny was originally made from pure copper. Finally, the Statue of Liberty did not always look green. Copper was the first element manipulated by humans. It is now, currently still a major metal industry.
Like silver, the element copper is also oligodynamic. However, unlike silver, copper’s
• N. Dirilgen, 1994, Cobalt-copper and Cobalt-zinc effects on duckweed growth and metal accumulation. Different concentrations of Cobalt2+, Zinc2+ and Copper2+ as well as Co2+Cu2+ and Co2+Zn2+ were added to nutrients given to a species of duckweed, Lemna minor L. the effects of these metals on the growth of the duckweed was recorded. A change in growth was not very noticeable until the concentration of Cobalt (Co) and Copper (Cu) reached 2.00 ppm (parts per million), where the growth of the duckweed was inhibited. It was also discovered that Cu and Co work together to inhibit growth when they are at a certain concentration, and at other concentrations, the one would neutralise the other, creating less of an effect on the growth of the duckweed. The conclusion the I took from this study is that as the
The heating of the solution caused the reaction to start which decomposed Cu(OH)2 and made the solution colorless and darkened the precipitate. The fourth step was the formation of CuSO4. After the solution was decanted from the precipitate and washed with near boiling water, 6 M H2SO4 was added to the beaker containing Copper (II) Oxide and this caused the precipitate to dissolve and the liquid become clear blue. The last step was the formation of Cu(s). This step recovered Solid elemental copper.
Hence in the sample only copper (II) chloride will dissolve leaving the sodium chloride behind once filtered through. The copper (II) chloride can then be obtained by evaporating the methanol; which has a boiling point of 65 degrees celsius whilst copper (II) chloride has a boiling point of 993 degrees celsius, thus allowing the methanol to be easily evaporated out of the solution eliminating concerns of the copper (II) chloride evaporating alongside the methanol. Purpose To investigate different methods of separating copper (II) chloride and sodium chloride in order to obtain the original masses of both substances.
The root origin of jewelry can be traced back to 2,500 b.c., to one of the earliest known civilizations in Mesopotamia – presently known as Iraq – and Egypt, it
So copper armour at my level is going to give an armour rating of 20. I commit ten points and get the ability to mine and smelt copper. That’s me
Copper Cycle Lab Report Ameerah Alajmi Abstract: A specific amount of Copper will undergo several chemical reactions and then recovered as a solid copper. A and percent recovery will be calculated and sources of loss or gain will be determined. The percent recovery for this experiment was 20.46%.
The percent recovery of the copper was calculated using the equation, percent recovery = (the mass of the copper recovered after all the chemical reactions/the initial mass of the copper) x 100. The amount of copper that was recovered was 0.32 grams and the initial mass of the copper was 0.46 grams. Using the equation, (0.32 grams/0.46 grams) x 100 equaled 69.56%. The amount of copper recovered was slightly over two-thirds of the initial amount.
⋅ 5H2O, which has about 36.0%, and CuCl2 ⋅5H20 (21.17%). Materials: Ring stand, ring clamp, evaporating dish, Bunsen burner, clay triangle, crucible tongs, electronic balance, sample of hydrated salt. Methods:
Bronze is made of copper and tin. While copper is plentiful tin is not. To complicate matters the two metals are rarely found near each other, which is why trade during the Bronze Age was so important. Ancient metallurgists were forced to look for another source of metal due to the Bronze Age Collapse, as they no longer had tin to make bronze. Iron was not a new discovery; the Hittites had used iron since 2000 BC.