LABORATORY REPORT 4 PREPARATION OF ALUM FROM ALUMINUM METAL Huy Nguyen October 2nd‚ 2012 The objective of the laboratory is to synthesize alum (KAl(SO4)2.xH2O) from aluminum powder and to determine the proportion of water in the alum crystals. Alum is a product from the reaction between potassium hydroxide and sulfuric acid. The reaction include several steps‚ as followed: Aluminum powder reacts with potassium hydroxide to generate Al(OH)4- ions and release hydrogen. 2 Al(s) + 2 KOH(aq)
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Material can be made to withstand extreme temperatures limits. * Used for switches and keyboards. Thermochromic Ink * These materials change colour when there is a change in temperature. * Thermochromic ink comes in two forms: Liquid crystals and Leuco dyes. * Leuco dyes are easier to work with and allow for a greater range of applications. * Applications of thermochromic ink include: flat thermometers‚ battery testers‚ clothing. Mr
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Marketing 7100-01 Crystal Pepsi A Giant’s Failure Fawad Anwar 6/24/2014 Crystal Pepsi: A Giant’s Failure I. Introduction Brief history of PepsiCo Brief Overview of Crystal Pepsi II. Marketing Mix Product – Crystal Pepsi and its product strategy (answering what and why) The making – Crystal Pepsi Launch Taste – The different taste promised by PepsiCo to its consumers Packaging – The attractive packaging
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Smart System or Structure What is a Smart Structure? A smart structure is a system containing multifunctional parts that can perform sensing‚ control‚ and actuation; it is a primitive analogue of a biological body. Smart materials are used to construct these smart structures which can perform both sensing and actuation functions. If truly smart‚ these intelligent systems can determine their present state‚ decide what is the optimum or more desirable state and carry out an appropriate
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Brittany Gecik Dr. Sowa Experimental Foods Lab February 13‚ 2013 Crystallization‚ Sugar‚ and Fudge Lab Report Introduction: Controlled crystal formation is important to acquire a certain texture in crystalline candy. Crystalline candies are smooth‚ creamy‚ and easily chewed with a definite structure of small crystals that resemble tiny snowflakes. Examples of crystalline candies are fondant‚ fudge‚ and penuche. When a concentration of sugar is higher than 121 degrees Celsius‚ it is
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Crystal Palace Describe the exhibition come about‚ what was the reason for it‚ the understanding that the industrial revolution is permanent‚ not some strange thing thats happening to society . The description has to give us insight to why the exhibition was important and to modernism. Two Parts: Building itself- dimensions‚ what does it mean when you build with iron and glass (to form an interpretation)‚ no internal supports which creates space to exhibit. Linear thinking‚ transparency‚ pre-fabrication
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HOLIDAYS HOMEWORK Chemistry PRESENTED TO: MISS SAIMA BY: Fatima JEHANGIR GRADE: 9(O) METOHDS OF PURIFICATION & ANYLYSIS Filtration Filtration is a mechanical or physical process to separate solid particulates from fluids Filtration is a technique used to separate a solid from a liquid. The solid is separated from the liquid phase by passing the mixture over a filtering media. Filtering media is characterized by being chemically inert to the mixture
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material changes color. They are used to determine whether a drug is present at the scene. 4.) Microcrystalline tests involve exposing the substance to a reagent and then examining the color and morphology of the crystals that form. This can provide the shape‚ color‚ size‚ and crystal formations of the specific drug. 5.) Spectrophotometry is a method to measure how much a chemical substance absorbs light by measuring the intensity of light as a beam of light passes through sample solution. It is
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it can be classified by its color. Another method is the streak test which is the color of the mineral in its powered form this is the true color of a mineral specimen as it lessens the impurity impact and eliminates the light distortion from the crystal. The luster test refers to the absorption‚ refection‚ or refraction of light by the surface of a mineral. The fluorescence test in ultraviolet light‚ some mineral specimens appear to Florence due to the fluorescent mineral impurities or due to locality
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language that is studied by the highest percentage of European students‚ 60‚3%‚ with French at only 30‚4%‚ German at 5‚2 % and Spanish at 3.5%. A question that many people are asking is: why has English become the global language of today? David Crystal‚ a famous linguist‚ said: "It [English] is a language which has repeatedly found itself in the right place at the right time". This means that the reason for this dominance can probably be found in the history og the English-speaking countries‚ and
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