Ink chromatography items needed: M&Ms® (4 different colors) Rubbing alcohol Coffee filters (2) plastic cups (2) Pencil Ruler Tape paper plate Table salt Water cotton swabs (4) Measuring cups/spoons 2-liter bottle procedure Coffee filters usually are round‚ but it’s easier to compare your results if the paper is rectangular. So your first task is to cut the coffee filter into a rectangle measuring three cm by nine cm. You will need two of these strips to complete the lab. Space
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The knowledge of chemical analysis today has become important not only for scientists in their research but in fact bears influence in our daily routine as well. To recognize and classify these uses‚ we have to first understand‚ what is chemical analysis?Chemical AnalysisChemical Analysis is a body of procedures and techniques used to identify and quantify the chemical composition of a sample of substance.1 It may be said as a collection of all the techniques required to obtain any chemical information
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05.05 Mixtures and Solutions Background: Paper chromatography is one method for testing the purity of compounds and identifying substances. Paper chromatography is a useful technique because it is relatively quick and requires small quantities of material. Safety: Warnings: * Rubbing alcohol (or isopropyl alcohol) is flammable‚ so be sure to keep it away from high heat or heat sources. * Keep pigments and solutions away from your eyes‚ wash your hands carefully after coming in contact
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binds the nucleoside inhibitor site. When it binds this site‚ it stabilizes the inactive T state and blocks the catalytic site which needs to be open for enzyme activity to occur. The glycogen phosphorylase b was purified with hydrophobic column chromatography and the concentration was determined with a Bradford Assay. The kinetics of glycogen phosphorylase b were studied by finding a molar extinction coefficient‚ 0.1617 mM cm-1 A-1‚ for
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Summary for Quiz Monday‚ May 30‚ 2005 12:13 AM Title Identification of Some Macromolecules Gist of Experiment • Use different tests to check for the existence of macromolecules in various substances o Iodine test checks for starch and/or glycogen o Benedict’s test checks for reducing sugars o Biuret test checks for protein Notes on Underlying Theory Introduction • The most abundant elements in living material are: o Carbon
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performance of one’s pen. The wrong ink means a pen that one may struggle with to use. This study attempts to find an alternative source of ink that can be used for highlighters. The sap of Powder-puff fruits is purplish and rich in color. It is this dye that interests the researcher to pursue the possibility of
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Melting point 1. What two effects do impurities have on the melting point of an organic compound? Soluble impurities affect the melting point of a solid in the following manner. a. The presence of an impurity in the molten compound reduces its vapor pressure thus lowering the melting point of the compound. b. Broaden the melting point range. 2. For what tow purpose are melting points routinely used a. To determine the identity of an organic solid. b. To determine the purity of an organic solid
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List of Chemistry Terms used in daily life α (alpha)‚ β (beta) α- (β-‚ γ-) ray spectrometer α-addition (alpha-addition) α-cleavage (alpha-cleavage) α-decay (alpha-decay) α-effect α-elimination α-expulsion in photochemistry α-oxo carbenes α-particle (alpha-particle) ’A’ value -factorquantity ab initio quantum mechanical methods abatement in atmospheric chemistry abeo- abiological abiotic abiotic transformation absolute activation analysis absolute activity‚ quantity absolute
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Term 1 - Summative Assessment Science (Theory) Question Paper Set - 1 Time: 3 to 3 ½ hours Max. Marks: 80 Instructions: 1. The question paper consists of two sections‚ A and B. You are to attempt both the sections. 2. All questions are compulsory. 3. There is no overall choice. However‚ internal choice has been provided in all the three questions of five marks each. You have to attempt only one option in each question. 4. All questions in Section A and all questions in Section B are to
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DNA Extraction from Wheat Germ and Making an Agarose Gel AIM: To be able to make and agarose gel and perform gel electrophoresis in six different dyes. Also‚ to extract DNA from wheat germ. INTRODUCTION: Agarose gel is a substance that is used in science for gel electrophoresis and size exclusion chromatography. These processes use agarose gel to separate and analyze proteins and DNA. The medium is composed of a purified agarose powder that has been boiled in a buffer solution and then cooled
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