INTRODUCTION Copper is one of the most abundant metals on earth. Its properties allow the metal to be extremely conductive in terms of heat and electricity. Due to its availability and solid nature, copper has been used to create tools since the early ages of humans. Copper has often been used to create alloys to further is strength as a metal. The copper cycle has long been studied in laboratories to demonstrate the metal’s versatility. The copper cycle consists of changing a piece of copper through a series of reduction-oxidation, precipitation, decomposition, and acid-base reactions to eventually return it back to pure copper. Research is currently being conducted to further experiment to find more uses for copper. In current medical research, copper has been found to be an effective antibacterial against the growth of E. coli. Medical experts are finally beginning to understand the importance of copper for human health. Additionally, further research is also being conducted to …show more content…
The wire was then bent into a flat ring and placed into a 250-mL beaker for the use of Reaction 1. Reaction 1 included adding four milliliters of 16 M HNO3 into the beaker. Since the reaction causes the release of a toxic NO2 gas, the reaction was performed inside of a fume hood. The beaker was occasionally swirled inside the beaker until the copper wire was fully dissolved and there was no more presence of the brown NO2 gas. The beaker was then removed from the hood and 150 mL of deionized water was added. Cu(NO3)2 was formed and all observations of the reaction were recorded. Reaction 2 of the experiment simply involved pouring 30 mL of 3 M NaOH into the beaker, using a graduated cylinder. The solution was stirred with a glass rod concurrently as the NaOH was being poured. Cu(OH)2 was formed and all observations of the reaction were
In future research, the opinion should be provided in multiple aspects and by more powerful evidences.
We use metals to construct all kinds of structures, from bridges to skyscrapers to elevators. The strength as well as durability of materials that are crafted out of metal make the materials ideal not only for construction but also for many other applications.
I would suggest to students performing the nitration to make sure their benzoic acid product is very fine and broken up before reacting it, as it has a tendency to clump together when it dries and thus proves very difficult to react in solution. I would also suggest keeping a very close eye on the temperature when adding the sulfuric/nitric acid mixture dropwise, as the reaction has a tendency to spike in temperature
The fifth experiment of the semester entails a synthesis reaction geared towards analyzing the structure of a product. The starting material is isopentyl alcohol. When reacted with acetic acid with sulfuric acid as a solvent, isopentyl alcohol produces isopentyl acetate, which is the goal product, as shown in the reaction below:
The purpose of this lab was to to cycle solid copper through a series of chemical forms and return it to its original form. A specific quantity of copper undergo many types of reactions and went through its whole cycle, then returned to its solid copper to be weighted. We observed 5 chemical reactions involving copper which are: Redox reaction (which includes all chemical reactions in which atoms have their oxidation state changed), double displacement reaction, precipitation reaction, decomposition reaction, and single displacement reaction.
Nowadays this element more active or used for infrastructures, electronics goods, and other services, this element also we call it a Dr. Copper element because of high levels of sense of Ph.D. economic benefits. Copper has 20 protons and electrons with the symbol of Cu. In 21 century the market of this element goes up to 20 million tons a year buy and sell in the world trades scale in three big cities in the world such as New York, London, and Shanghai. Cu more necessary for wire, electronics, and computer chips; Copper also helps us to away bacteria
Pounding metal and fabricating metal in thin sheets and sections that humans need or want has a long history. The discovery of how to make and control fire made extracting metals form or more efficient instead of having to find almost pure nuggets of metal. In many civilizations copper was the metal they used but that was succeeded by bronze eventually it is made of copper and tin.
Copper Oxide + Carbon Dioxide (CuCO3 = CuO + CO2) The reactivity series determines how fast this reaction occurs. The reactivity series is the order of metals in the periodic table. The most reactive metals are placed at the top of the reactivity series.
Copper Sun is a book about a fifteen year old girl named Amari who was stolen from her village by white slave traders, and lived a horrible life as a slave until she finally escaped.
The Electrolysis of Copper Sulphate Aim Analyse and evaluate the quantity of Copper (Cu) metal deposited during the electrolysis of Copper Sulphate solution (CuSo4) using Copper electrodes, when certain variables were changed. Results Voltage across Concentration of solution electrode 0.5M 1.0M 2.0M 2 5.0 10.6 19.5 4 10.5 19.8 40.3 6 14.3 26.0 60.2 8 15.2 40.4 80.3 10 15.0 40.2 99.6 12 15.1 40.0 117.0 Analysing/Conclusion The input variables in this experiment are; concentration of the solution and the voltage across the electrodes. The outcome is the amount of copper gained (measured in grams) at the electrodes. By analyzing the graph, we can see the rapid increase of weight gained for the 2.0 molar concentration as the gradient is steeper.
Metals are naturally occurring elements in the Earth's crust, and copper is one of the oldest metals known to civilization. Copper is an essential trace element that is vital to the health of all living things (humans, plants, animals, and microorganisms). In humans, copper is essential to the proper functioning of organs and metabolic processes. Copper is generally acquired through dietary intake of copper rich foods such as animal liver, nuts, and shellfish. (Weiss and Linder, 1985)
== § Test tubes X 11 § 0.10 molar dm -3 Copper (II) Sulphate solution § distilled water § egg albumen from 3 eggs. § Syringe X 12 § colorimeter § tripod § 100ml beaker § Bunsen burner § test tube holder § safety glasses § gloves § test tube pen § test tube method = == = =
Refer to Chemistry Lab # 2 – Investigating Changes. No changes have been made in this experiment. Methods = == ==
[18] in their literature review paper, classified more than one hundred of recent works and have mentioned OR scheduling articles, were significantly increased in the current
Aluminum is one of a number of soft metals that scientists call "poor" metals. It can be shaped and twisted into any form. It can be rolled into thick plates for armored tanks or into thin foil for chewing gum wrappers. It may be drawn into a wire or made into cans. Aluminum is a generally popular metal because it does not rust and it resists wear from weather and chemicals. (Bowman, 391) Aluminum is an element. Its atomic number is thirteen and its atomic weight is usually twenty-seven. Pure aluminum melts at 660.2ºC and boils at 2500ºC. Its density is 2.7 grams per cube centimeter. Aluminum is never found uncombined in nature. (Bowman, 391) Aluminum is a very useful metal that is light, easy to shape and can be strong. This makes aluminum one of the most used metals in the world, right behind iron and steel. (Geary, 185) In its pure state, aluminum is quite weak compared to the other metals. However, its strength can be greatly increased by adding small amounts of alloying elements, heat-treating, or cold working. Only a small percentage of aluminum is used in its pure form. It is made into such items as electrical conductors, jewelry, and decorative trim for alliances and cars. A combination of the three techniques has produced aluminum alloys that, pound for pound, are stronger than structural steel. Some common metals used in alloys for aluminum are copper, magnesium and zinc.(Walker, 31) The added elements give the aluminum strength and other properties. (Newmark, 41) Aluminum is one of the lightest metals. It weighs about 168.5 pounds per cubic foot, about a third as much as steel which weighs 487 pounds per cubic foot. (Neely, 214) As a result, aluminum has replaced steel for many uses. For example, some ...