This experiment is to be used to determine the era of which the composition and thus the density of the penny changed, and what the other metal besides copper has made up the composition since 1962. First, ten pennies from three different time periods (1995-1999, 2000-2004, 2005-present) were gathered. All ten pennies from a specific time were weighed together on an analytical balance. Then, a fifty mL graduated cylinder was filled with twenty mL of water, which was recorded as the initial volume. The ten pennies were dropped into the graduated cylinder one at a time so that the liquid didn’t splash.…
Steven Joseph Chem 111 Eli Munoz 3 October 2016 Chemistry Technical Abstract: The Copper Cycle Steven Joseph*, Christian Contreras Introduction: This experiment consisted of studying the copper cycle.…
In 1792 the currency of the United States penny was developed. The circle shaped structure was twice the size of the current penny as we know today. The penny was the United States first currency and Benjamin Franklin is to thank for that. The penny represents the foundation of our country and shows how much we have grown as a nation. But there has been a lot of controversy on whether or not the penny should be kept due to the fact it cost more to make the penny than it is to use it as currency.…
He was finally able to measure how much lead was in a rock. Humans used lead as long ago as 5000 BC, as it was able…
Conclusion The Synthesis of Copper Compound lab was to take a regular copper wire and turn it into a metallic copper which is a pure substance. When copper reacts with nitric acid several physically properties can be seen happening for example: the colour changing and gas vapor starting to form. Many of the other reactions were similar to this that I and my partner saw such as: the formation of copper (II) hydroxide, decomposing the compound (CuO (OH) 2) by heating it, adding a different acid compound (H2SO4), and mixing solid zinc. There were several unknown variables because in the lab manual book it stated that to add this much of x substance if the compound does not change colour or state.…
According to the The Iceman, the Iceman’s use of his copper-bladed ax does not seem consistent compared to the rest of his gear. For example, it is said that he carried “small flint tools,” indicating that all of his gear was created out of sharpened flint stones, such as his flint-tipped arrows, his flint knife, and his tool for sharpening such flints. Although most of his tools were made out of flint stones, his ax was an anomaly, being made out of a new material, copper. This indicated the budding of the age of metals between the people of the time of the Iceman.…
The biblical story of “Adam and Eve” is one commonly known. In Zora Neale Hurston’s short story “The Gilded Six-Bits” similar themes have arisen. Hurston has found new ways to represent all characters and objects from the biblical story into her own. Not only are the character’s present, but there’s two common themes as well; The concept of eating fruit from the forbidden tree, and the representation of God and religion. With her short story, Hurston has been able to retell the tale of Adam and Eve.…
The discovery of different types of metals such as copper helped in making stronger tools that were able to last for a longer period of time. During the latter part of the Stone Age, people found that by adding certain metals to copper it would create an even sturdier metal known as bronze. “They discovered that if you add just a little of another very rare metal, it makes the copper stronger. That metal is tin... ”(Gombrich, 9).…
Etruscan Mirrors Vs. Cloud Gate Modern versus Ancient, 2006 versus 300 B.C. and in some regards a culture versus a culture. The two pieces of art at face value are inconceivable to compare and seem distinctively different. Though, many differences there are a few similarities between the two pieces of art; The Etruscan Mirrors and The Cloud Gate that stem beyond the looks and into the symbolism and meaning for creation and the attempted message that the artists were trying to convey. Starting with the Etruscan Mirrors which were created by the Etruscans.…
The students will be working with a compound that contains chlorine, copper, and water (Sanders). The empirical formula that is provided to the student is 〖Cu〗_a 〖Cl〗_b∙xH_2 O, and it stands for the copper chloride hydrate (Sanders). I believe…
Copper-alloy miniature votive dagger. The pommel is uneven and spherical with a ridge at the top. The pommel narrows into the slightly curved grip. The guard is a square shape with two parallel grooves on each side. The blade narrows into a dulled point.…
Copper is a chemical element with symbol Cu and atomic number 29. It has very high thermal and electrical conductivity. Copper is used to conduct heat and electricity, and for currency.…
“Periodic Table” by Primo Levi elaborates on the idea that one must make personal sacrifices in order to experience true fulfillment. Throughout the novel, he highlights on the challenges one faces while executing self-serving actions. While working in Milan, Levi withholds romantic feelings for his fellow co-worker, Giulia, due to his lack of taking risks. Rather than pursuing a relationship that would bring happiness for both himself and Giulia, he “[does] not return her embrace” as he fears “her destiny and [his own] would crash off the rails” (118). Ultimately, Levi does not sacrifice the risks of failure to pursue their relationship and is left dissatisfied knowing his missed opportunity.…
It is in all soil and is key to the plants growing in this soil that allows crops to grow. Copper is formed in stars and is key to the formation of stars and elements. This is how copper is an important element to all of mankind.…
An atom is a basic unit of an element. For thousands of years, people have been questioning about these tiny particles and have came up with many theories based around it. Though many people believe atomic theories started with John Dalton around the late 1700s or early 1800s. This is not true as the atomic theories started sometime during 300 or 400 B.C. with the philosopher, Democritus, being one of the first to come up with a theory about atoms. Democritus’ theory gave the basics of an atom; but his theory was rejected by many during his time as fellow philosophers, Aristotle and Plato, rejected his theory ("The History of the Atom").…