Copper electrodes

Copper is a chemical element that has the symbol Cu and atomic number 29 (Copper Development Association of South Africa, 2017). The element possesses a wide range of properties that make it invaluable for many different applications. It is an excellent conductor of heat and electricity, as well as being very malleable and ductile. Copper also has excellent alloying properties and is resistant to corrosion (Geoscience Australia, 2017). Copper mining is a large industry in Australia, but the industry

Pennies made before 1982 and the pennies that were made after them create a significant difference. Pennies made before 1982 are made of copper (Warnick 1). Due to the change of the of the metals over the time period it must of caused a change in the pennies mass. Therefore, the density of pennies created before 1982 and the pennies produced today have different densities. Density can also be used to identify unknown substances“Density is defined as the ratio of mass to volume” (Lab: A Penny For

Procedure: A. Reaction between the elements copper and sulfur To begin the lab, a 5 cm copper wire was obtained and observed. Properties such as luster, malleability, and color were noted. Then, a pencil was used to make a small coil by wrapping the copper wire against it. The coil was placed in a crucible afterwards. Sufficient powder sulfur was added in. The crucible was then covered and conscientiously placed upon a clay triangle on an iron ring. Next, the crucible was heated with the hottest

the element copper. Copper is one of the first metals ever to be handled by human hands and till this day is still one of the most important metals in the industry. Copper gets its name from the Latin word “Cuprum” this words meaning is from the island of Cyprus. Cyprus is an island where the Romans mined for copper in the ancient times. Copper is an transition metal with the atomic number twenty nine. Copper has an atomic weight of sixty three point five hundred and forty six. Copper has a density

PolyMet Mine PolyMet is planning on mining for copper, nickel, and cobalt in northeast Minnesota. PolyMet will be mining in an area of 6,650 acres which they will be exchanging with The Forest Service for 6,690 acres of PolyMet’s land. There mining operation will go on for 20 years and will process 225 million tons of ore. The project will employ 360 people directly and around 600 people indirectly, and will have an estimated earnings of $515 million annually. Ones they have the correct permits

In 1991 two German hikers found a body stuck in the ice of Italian mountains. When the body was first found they thought that he was just another victim of a hiking accident. After further investigation, they concluded that he wasn’t just another body, but in fact a 5,300 year old mummy. The mummy was named Ötzi after the Ötztal Alps where he was found. Although scientists know how he was killed, they are still speculating why he was murdered. Scientists do know that he was killed by a 24 inch arrow

For our copper and sulfur experiment we used a crucible to hold the chemicals while they were heated. We also used a ring stand ring and a triangle to hold our crucible above the fire. A clay triangle was employed to hold the crucible above the bunsen burner’s flame. To take the hot crucible off of the clay triangle crucible tongs were utilized. Procedure A.) A Reaction Between the Elements Copper and Sulfur A 2 inch copper wire was obtained. The first observation of just the copper wire was

Iron has been here since the ancient Greece time no one knows who discovered this element. In fact, we still use this element to make structures steel, weapons, vehicles, anything that made of steel or iron. In Mesopotamia, there are evidence people that were smelting iron around 5000 BC. Artifacts made of smelted iron have been found dating from about 3000 BC in Egypt and Mesopotamia. In those times, iron was a ceremonial metal; it was too expensive to be used in everyday life. Iron has isotopes

During this experiment, one penny stayed almost the same, while the other one turned green and completely changed. The experiments started with two cups. One was labeled water, while the other one was labeled vinegar. In each cup, paper towels were placed at the bottom. In the cup labeled vinegar, vinegar was added and in the cup labeled water, water was added. Then, one penny was placed in each cup and observed on a span of four days. On the first day, penny A (cup with water) looked the same. Penny

INTRO: This is the examination and comparison of Otzi the Iceman and Narrabeen Man; ill be talking about where they were discovered, When they died, How they died, what was there life like, How they were preserved, The archaeological evidence that was discovered, interpretations from experts and the return of the remains to indigenous communities. QUESTIONS: Otzi the iceman was found in the Otzal alps on the Austrian–Italian border (that how he got his name Otzi) While Narrabeen man as found near