Essays on Metals Page 3

Heavy metals (HM) are elements that are known to be dense, usually more than 5g/cm3. They can be classified into groups. The necessary elements that play important role in metabolism of organisms and cells at low concentrations. Examples are; Nickel, Copper and Zinc. These elements become toxic at high concentrations or high doses. The elements…

Introduction The purpose of this lab is to create two material samples through the process of powder metallurgy. After these samples have been manufactured completely through this process then they are evaluated under a microscope. One sample was sintered, and the other one was in its original compacted state for a comparison of how sintering…

 Describe what is necessary for a substance to be a conductor Of electricity. In order for a substance to be a good conductor of electricity, there must be charged particles in the substance, ions or electrons. These particles must be free to move within the substance. Form a hypothesis as to whether distilled water is…

ynthesize my own aspirin Analyse the purity of my aspirin samples (aspirin and recrystallized aspirin) compared to commercial aspirin by use of analysing melting points, TLC plates and colorimetry tests Investigate how pH effects the rate of hydrolysis of aspirin Background theory Making my own sample of Salicylic acid (to then be converted into Aspirin)…

The Electrosteel Castings case discusses the decision of an Indian manufacturer of ductile iron pipes (DIP) and cast iron pipes (CIP) to expand internationally. The main issue revolves around deciding where to expand and the type of investment to pursue. This paper will analyze the available options and make a recommendation. 1. Electrosteel’s options consist…

During infancy kids needs to ensure that they drink lots of calcium because it makes their bones stronger and helps them to crawl and walk. It also essential for blood clotting. If their body is lacking calcium this will delay their development. In this stage the milk teeth start to appear. Infants also need vitamins…

Over the course of this paper, the composition and formation of Hess layers will be described more specifically. According to ‘Earth: An Introduction to Physical Geology’, “The inner core did not exist early in earth’s history, when Our planet was hotter. However, as the Earth cooled, iron began to crystallize at the center to form…

CHEMISTRY (Theory) Time allowed : 3 hours General Instructions: (i) All questions are compulsory. Maximum Marks : 70 (ii) Marks for each question are indicated against it. (iii) Question numbers 1 to 8 are very short-answer questions and carry 1 mark each. (iv) Question numbers 9 to 18 are short-answer questions and carry 2 marks…