Chemistry Task 2 Portfolio Outline and examine some uses of different metals through history, including contemporary uses, as uncombined metals or as alloys. Metal/Metal Alloy Uses Throughout History Copper - Used to make ornaments and domestic utensils in historical times (not as tools as it is a soft metal) - In modern times used in electrical wiring, pipes and plumbing fittings, jewellery, decoration, - This is due to its malleability, ductility and good electrical conductivity. Bronze…
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…
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. Along with its overall significance to biological systems, reactions were done in order to test the types of reaction types associated with copper. In addition, vacuum filtration methods and detailed observations were taken on how copper reacts with different chemicals as it is constantly heated…
Orientation Event During the first session, Purple started to share their experience with full time work and the internal battle that they were experiencing on whether or not they should stay in the job. For me it was interesting to see that this one story so clearly resonated with almost every member of the group. Our body language changed. It was like the group was coming together for the first time to rally around Purple so that they could feel like they were not alone in their experience.…
7. There is no formal process in place to identify a legislative fee change for a credential fee. An update to the Master Fee Table could either not be identified, or be identified and communicated to the wrong department, causing a fee change to not be updated. There should be a clear understanding of how this process works in the Credentials Department when updating the Master Fee Table. This process should be well-communicated so that all other departments that could potentially be involved…
safety manager, I’ve identified that workers were exposed to cadmium and lead. Cadmium is a soft malleable transition metal. It is silvery bluish-white in color. Although toxic by nature, this chemical element is commonly used to create dry cell batteries. Like mercury, cadmium has the lowest melting point of groups three through eleven transition metals. Lead is a malleable soft heavy metal that is denser than most common materials. It bluish-white in color when freshly cut, and stains to dull…
During the sheet metal operations, e.g. bending, stamping, drawing and stretching, among the various possible modes of failure, such as wrinkling, scoring, the tearing of a polycrystalline sheet metal is the most common, resulting from an uneven or exorbitant amount of plastic deformation forming a localized neck and therefore limiting the formability of the polycrystalline sheet metal. In the sheet-metal forming industry, it is therefore, of high importance that the failure of metal sheets due…
The change in enthalpy for the combustion of magnesium metal Abstract ======== Hess’s law of heat summation states that the value of DH for a reaction is the same whether it occurs directly or as a series of…
Toxicology Profile; Arsenic Basic Chemistry Introduction Arsenic is an abundant naturally occurring element with an atomic number of 33 and an atomic weight of 74.92 g. Although strictly a metalloid, arsenic is commonly referred to as a ‘heavy metal’ and can be found within group 4 of the periodic table. It should be noted that most of the other elements within this group have a biological role, but arsenic itself is a toxin (see section 1.x). Some additional chemical properties of elemental…
the same valence electron because of their location and family relation to the period table. The alkaline metals are a reactive group of metals and combine with other elements so easily that they are not found on earth in the form of their free metal. They are seen in nature in the form of ionic compounds like calcium carbonated and this occurs naturally in limestone etc. Alkaline earth metals…