The purpose of the lab is to acquire the percent composition of zinc and copper. The procedure included obtaining a post 1983 penny and washing it with soap and water. Using a triangular file, we made an X on the penny. Then, we cleaned the top and bottom of the penny with steel wool until it was shiny. We rinsed the penny in acetone and dried it with paper towel.
Mary Jane and Allen Green the owners of Greene’s Jewelry are suing Jennifer Lawson for disclosing company’s secret process of Ever- Gold. Jennifer Lawson was a former Junior executive secretary at Greene’s Jewelry violated a confidentiality agreement of Greene’s Jewelry. Even though she signed a confidentiality agreement at Greene’s and agreed not to disclose any information regarding Greene’s process to create Ever-Gold. She disclosed the process of Ever- Gold to the Howell Jewelry the competitor of Greene’s Jewelry to gain employment. The Greene’s has maintained the process by Ever- Gold as a trade secret.
The composition of the penny is a mixture of copper and zinc. The composition of a specific penny can be determined by the year of production marked on the coin. In the article “Is My Penny Solid Copper or a Copper-Plated Zinc Cent,” the writer states, “If your… penny has a date before 1982, it is made of 95% copper. If the date is 1983 or later, it is made of 97.5% zinc”(Bucki).The difference in composition has an effect on price, as copper is worth more than zinc. Since the U.S. Mint has began the production of pennies, over 1.65 trillion pennies have been made for circulation.
Traveling from the U.S. mint into the hands, pockets, and wallets of citizens, ultimately, pennies will develop a dirty look due to daily interactions with their surroundings. In recent years, many have discovered possible solutions to restore the original shine of copper pennies. In order to determine what solution most effectively sterilizes our common pocket money, it is crucial to understand what makes pennies dull in the first place and what can counter this reaction. Over time, pennies receive a dark coating, creating a dull appearance.
Have you ever wondered how pennies have changed over the years? The penny has undergone several design changes, and composition changes – some pennies are made purely of copper, some have nickel, tin and zinc. If we
Throughout the experiment, copper was altered a total of 5 times, but after the final chemical reaction, solid, elemental copper returned. Each time the solution changed color, a precipitate formed, or when gas appeared, indicated that a chemical reaction was occurring. For the first reaction, copper was added to nitric acid, forming the aqueous copper (II) nitrate (where the copper went), along with liquid water, and
On our paper we predicted the amount of pennies that could fit in the boat before it sank. We tested the boat in the water and added pennies one by one. We then calculated the mass of pennies that fit in the boat and the density of it. The purpose of this Lab was to make a boat that holds as many pennies as possible and understand how to calculate
People aren’t seen at stores counting off pennies to buy their groceries or a present for a friend very often are they? This is because pennies are just a waste of our time and space. Despite many people’s thoughts on this debate it has been going on for a couple years and we still haven’t came to a conclusion to this. The manufacture of pennies should be discontinued from the United States currency.
Introduction: The purpose of this experiment is to demonstrate the different types of chemical reactions, those including Copper. There are different types of chemical reactions. A double displacement reaction is a chemical process involving the exchange of bonds between two reacting chemical species. A a decomposition reaction is the separation of a chemical compound into elements or simpler compounds and the single-displacement reaction is a type of
The idea of "alchemy" in The Alchemist works as a metaphor comparing the changes people undergo as they pursue their "Personal Legends" to the change in which normal metals become gold. In the Englishman's words, alchemists, those who practice alchemy, dedicated their lives to purifying metals in hopes of turning them into gold. He states that in the process, "they discovered that the purification of the metals had led to a purification of themselves" (Coelho). In the same way other metals can transform into gold, people transform as they seek their "Personal Legends". In achieving their destinies, the Alchemist explains that people gain newfound knowledge on their journey, and they are "severely tested" (Coelho) on the lessons they have learned
The purpose of this lab was to change pennies from copper to silver to gold, like alchemists have attempted to do in history. Through the data and observations gathered throughout this experiment, it can be concluded that the pennies were not changed into a different element. For example, the density of the penny from 2005; which was the penny that was experimented on to see whether or not it could turn into silver; was 4.62 g/cm3 before the experiment and 4.89 g/cm3 by the end of the experiment. If this copper penny really would have turned into silver, then the density of the penny would be 10.49 g/cm3; which is the density of silver; by the end of the experiment. The penny may have turned silver in color, but this was only because it was plated in the zinc that was added to the beaker of water in the experiment.
Alchemy is an early form of chemical technology which explores the nature of substances. It had developed such an amazing language of emblematic symbolism which was then used to explore the world. It had a very strong philosophical basis, though many alchemists did incorporate religious metaphors and spiritual matters into their alchemical ideas. Alchemy originated in Egypt, where the word Khem was being used as a reference to the fertility of the area around the Nile river. The Egyptian belief of life after death and the mummification procedures developed most likely gave rise to the rudimentary chemical knowledge and goal of achieving immortality.
While practices of alchemy may only comprehend to individuals as a mythical practice, alchemy is alive and well in our modern communities today. Whether we admit it or not, some of our hobbies, professions, and even infrastructure encompass the idea of alchemy. Alchemy gained notoriety in Europe and soon became a “forbidden practice” as some deemed alchemy as a means to power and wealth. In Faust, Mephistopheles references alchemy as a metaphor to help the kingdom’s financial problems but to no avail. The transformation of an item into its perfect form also gives meaning to Faust’s journey for transcendence.
To start it uses something known as alchemy which is a form of magic in a way but it is also something that was also considered to be real and was used during medieval times. Which leads into how there was someone known as Dee somebody the two main characters meet is talking about how he had found ways to live for ever. This is shown on page thirty it had him saying “I became the greatest alchemyst of all time, sought after by kings and princes, by emperors and even the Pope himself. I discovered the secret of the philosopher’s stone hidden deep in that book of ancient magic: I learned how to turn ordinary metal into gold, how to change common stones into precious jewels. But more than this, much more, I found the recipe for a formulation of herbs and spells that keep disease and death at bay” (30).
This experiment has to be carried out carefully
