: The copper cycle IN TRODUCTION The purpose of the experiment is to recognize that change of state‚ change in colour‚ formation of a precipitate‚ or the evolution of heat are associated with a chemical change; to study reactions of copper. Copper is an element that can be found in nature in a variety of different compounds. The most common natural ore is the sulphide‚ known as chalcocite‚ Cu2S. This mineral is an important source of copper metal because it is about 80% copper by weight
Premium Chemistry Copper Chemical reaction
Percent of Cu in a post 1982 cent PURPOSE: What is the experimental % of copper (Cu) in a post 1982 cent? In this lab‚ we will determine the % composition of a modern (post-1982) penny by using a strong acid called nitric acid (HNO3)‚ to react and dissolve the zinc core‚ leaving only the copper coating. Once only copper remains‚ we will then compare its’ absorbency to the other five post-1982 penny Cu concentrations made in this lab. INTRODUCTION: Before 1982 the US penny was made
Premium Laboratory glassware Concentration Zinc
CH 130 B: General Chemistry I The Lab Report As a scientist you are responsible for conveying the results of an experiment to a supervisor‚ a colleague‚ or the public. Often‚ you will convey this information in the form of a scientific paper describing your work. This paper needs to clearly describe why and how an experiment was done‚ and it must include an interpretation of results‚ including a discussion of their importance and any significant sources of error. You lab report will
Premium Chemistry
Copper Mining in Zambia Norman Mulimbwa Shachile WHUT‚ Luoshi Rd.‚ International students building No.8‚ Wuhan‚ 430070‚ PR China Abstract The mining industry has been the economic and social backbone in Zambia since the first major phase of exploitation of the Copperbelt ’s Cu-CO deposits commenced in the early 1930 ’s. Since that time a wide spectrum of other metalliferous and non-metalliferous resources have been discovered in Zambia and although exploitation of these has been limited‚ they
Free Economics
Imagine a world without the penny. No more happy children who think good luck will come their way when they find a penny heads up on the ground. No pennies around to make that old tin cup clink and brighten the day of some desperate homeless man. Charities‚ instead of thriving‚ would suffer due to penniless penny drives. Jobs would be lost due to the lower demand for zinc that could be mined and produced into American money. Most importantly‚ a significant part of history would be thrown away and
Premium Economics United States Poverty
the ‘penny’‚ has been a part of United States history for over two hundred years.” It’s time for those two hundred years‚ and counting‚ to be over. The penny needs to stop being produced to best help the consumer and the government. In “Penny Anti” by John Fund‚ the economical reasons for getting rid of the penny are listed‚ as well as alternative solutions to the one-cent piece. In the second article‚ “The Many Faces of the Penny‚” by J. Wendell Shelton‚ there is a backstory of how the penny we know
Premium Military Penny Money
Over the past few years‚ the debate on whether or not the penny should remain a part of the U.S. currency system has increased in popularity. With many politicians‚ journalists‚ and everyday citizens giving their opinion‚ the topic has certainly caused controversy. Although many would suggest otherwise‚ the penny coin is a historically and monetarily valuable aspect of American culture that should remain intact. Pennies hold significance in retaining American history. It had been the first coin
Premium United States Luck United States dollar
The Copper Cycle Alexes Montalvo Chem 1500-10 September 26‚ 2012 The Copper Cycle Introduction: The Copper Cycle is a popular experiment used to determine if an element‚ in this instance‚ copper‚ reverts to its elemental form after a chain of reactions. This experiment is very dangerous because of the reactions between the strong acids and bases. In this experiment I performed a series of reactions starting with
Premium Sulfuric acid Ammonia Zinc
Copper is one of the few metals that have been mined for more than 100 decades globally. According to M.G.C Wilson (1989) copper has been mined since the early 3000 BC in Cyprus. In the ancient times copper was used for making tools‚ weapons‚ ornaments and many household utensils. Copper is the third most widely used metal after aluminium (Al) and iron (Fe) because of its high durability (Doebrich et.al‚2009). In the Southern African region copper has been extracted by the early inhabitants long
Premium Ancient Egypt Iron Egypt
Dominick Prince Partner: Ryan Potts Reactions of Copper Due: Monday January 14‚ 2013 Beginning of Class Block: 5 Purpose / Safety: Purpose: 1. Observe some chemical reaction of copper and its compounds. 2. Write word and formula equations to represent these reactions. Safety: 1. Wear goggles and a lab apron or coat. 2. Tie back long hair and secure loose clothing before working with an open flame. 3. Corrosive substance; avoid contact with skin‚ eyes‚ and clothing
Premium Sulfuric acid Ammonia Zinc