Copper

the dark corrosion spots away and made the copper color shine like new, which then allowed us to have a clean surface to experiment on. This was mostly a physical change but their was a slight chemical reaction because of the acidity of the vinegar. We then heated granular zinc and zinc chloride solution with the penny in a dish on a hot plate until it boiled. We removed the penny with tongs and placed it in a beaker of water, immediately noticing the copper penny was now a bright, metallic…

inches apart. Cut out a piece of wire mesh to fit the circumference of the tin tuna can, and mold the wire to the side of the can, creating a grill for the Cheetos to burn. Wrap the sides of the can with foil tape, without blocking the holes. Obtain a copper pipe, 11 5/8th inches in height, and 5/8th inch diameter, and tape the the pipe to the inside of the can with 5 1/2 inches sticking out the…

One of the earliest metals to be discovered, lead has a long history with mankind. It was first discovered around 7000 BC as a byproduct of silver smelting. Lead is metal known for its resistance against corrosion, malleability, and low melting point. Mined all across the world, lead was one of the most important metals in ancient times. Although lead was toxic, it was used widely, particularly in the Roman Empire. Through its uses and toxicity, lead affected the classical era in a drastic way.…

Otzi the Iceman PBS NOVA Iceman Murder Mystery 2011. YouTube, 16 Feb. 2013. Web. 23 Oct. 2016. Jessica Alcala Professor Patrick O’ Neil Anthropology Introduction: In September 1991, a pair of hikers wandered off the trail in the Italian Alps discovered a frozen body laying on a rock. The body was later confirmed by experts to be the preserved body of a man who was about five thousand years old during the the time of the Neolithic era. The man was named “Otzi” after the…

The work I choose from the museum was a Bearded Bull’s Head from 2600 - 2450 BC. This was from the Sumerian, Early Dynastic III period. The bull’s head is made from copper with lapis lazuli and shell inlay which can be seen in the eyes of the bull. Since this was made from a valuable material it is thought to be used as a lintel over a door since it is too heavy for a piece of furniture. With the age of the object, it has pieces broken off of it such as the beard has only half left on. It’s not…

Uncleaned Ancient Coins Guide - The Antique Store - Joshua Lee [ Figure 1:1 ] Requirements 1 Pin Coins Some olive oil Purified Water Containers Lots of time and patience Magnifying glass Good lighting source [ Natural light works best ] Towels Brushes Notes before reading Please read the sections below first before a cleaning attempt is started: Bronze Disease I have doubts about cleaning. I may damage it. Method Method ­ 1] Place coins on a flat surface with good lighting. I…

to prove and discern the empirical formula of copper oxide using the Law of Conservation of Mass. This states that in measuring the mass of each component of copper oxide and determining the percent composition of each the copper and the oxygen within copper oxide it is possible to find the ratio of the elements within the compound. Procedure: In order to conduct this lab, 25.1mL of distilled water then 25.5mL of 3M HCl must be added 2.11g of copper oxide. This solution must be stirred until…

chemical reactions involving copper. The goal is then to perform precipitation, acid-base, decomposition, and redox reactions using the copper cycle. The mass of the copper was then analyzed using the percent recovery formula. Reaction 1: The Formation of Cu(NO3)2: Reaction 1 of the experiment involved performing a redox reaction to create Cu(NO3)2. Immediately after HNO3 was added to the copper wire (Cu), the brown NO2 gas was emitted from the solution. As the copper wire dissolved, the…

The rivets and grommets are made of copper and come from a company in Missouri, that acquires it's raw materials from U.S. mines. In 2014 the United States produced 1.37 million metric tons of copper, worth $9.7 billion, making it the world's fourth largest copper producer. Arizona, Utah, New Mexico, Nevada, and Montana are the top five copper producing states. The process of extracting copper from copper ore varies according to the type of ore and the desired purity of the final product. The…

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…