Iodine Test for Starch Introduction and Hypothesis: In this experiment‚ we used iodine to test for starch in certain solutions. Iodine separates starch from polysaccharides‚ monosaccharides‚ and disaccharides. Starch is a curled polymer of glucose and iodine interacts with molecules‚ which changes the color of the molecules to a kind of black color. Iodine does not respond with carbohydrates that are not curled or coiled‚ thus the color stays yellowish brown. A black color result means that starch
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Kinetics of the Harcourt-Essen Reaction Name: Manpreet Kaur Candidate Number: 7123 AS and A2 Aims: AS AIMS: 1. Investigate the effect of temperature on the rate of reaction. For this aim 3 sets of results will be obtained by timing how long it takes for the colour change to occur in different temperatures determined by the use of an electric water bath. With these results‚ the effect of temperature on the rate of reaction will be investigated. 2
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all metabolic functions in the human digestive system. It is found that benedict’s solution‚ when heated makes a yellow-orange colour to indicate the simple sugars. Iodine is the indicator of a complex carbohydrate.Without enzymes that help these metabolic events absorption during digestion would be without
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CHEMICAL KINETICS: IODINE-CLOCK REACTION DATE SUBMITTED: 14 DECEMBER 2012 DATE PERFORMED: 7 DECEMBER 2012 ABSTRACT Chemical kinetics involving reaction rates and mechanisms is an essential part of our daily life in the modern world. It helps us understand whether particular reactions are favorable and how to save time or prolong time during each reaction. Experiment demonstrated the how concentration‚ temperature and presence of a catalyst can change the rate of a reaction. 5 runs of dilution
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An Analysis of Frank O’hara’s “A Step Away From Them” At the turn of the 20th century‚ the movement of modern art began to distinguish itself by moving away from traditional and classical forms. Artists like Pablo Picasso were deconstructing their formal techniques by abstracting forms of conceptual art. We began to question and criticize: “Is that art?” By mid-20th century‚ the schools of the modern movement already began to echo into literature‚ dance‚ and music. Abstract Expressionist literature
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STEP UP 3 Synopsis The story begins as Robert “Moose” Alexander III who is a student in the New York University‚ majoring in Electrical Engineering‚ together with his best friend Camille Gage‚ promised his dad that he will not dance anymore. As they were busy touring around the university‚ Moose noticed a pair of Nike Dunks wore by a guy named Luke. He got fascinated with the shoes and followed the guy who was wearing it‚ but accidentally‚ he got involved into a street dance battle where he defeated
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Iodine is an element that is critical for normal function of the thyroid gland‚ which is a key regulator of the body’s basic metabolic rate. Iodine is a micronutrient‚ meaning we require only small amounts of it. For example‚ adults need about 150 micrograms of iodine in the form of iodide ion per day. However‚ an insufficient supply of iodide via diet and drinking water causes the non-cancerous enlargement of the thyroid gland known as goiter. Prolonged lack of iodide can lead to loss of thyroid
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Quiz 3 Name ______________________________ Class Number _________________ 1. Let X be a random variable with Cumulative Distribution Function (CDF) below. Answer the following probability questions: (You must write out CDF notation) – such as 1 2 3 4 5 6 7 8 9 10 .02 .09 .15 .41 .51 .66 .73 .97 .98 1.0 a) Answer _______________________ c) Answer _______________________ d) Answer _______________________ e) Answer _______________________
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Tutorial #3 1. The discovery of the cell occurred in 1665. The cell has made great progress in the discovery of how humans and other organisms work. 2. The discovery of genetic material in DNA occurred in 1865. This allowed us to determine different traits in mammals. As well as how we can determine different traits‚ and the percent chance of obtaining these traits. 3. In 1885 the cell culture technique was first developed. This allows us to view cells outside of their environment
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do not form. Surface Scratches. Surface scratches can ocur on the drawn parti f the punch and die are not smooth or if lubrication is insufficient. 2) In V-bending‚ the sheet metal is bent between a V-shaped punch and die. Included angles ranging from very obtuse to very acute can be made with V-dies. V-bending is generally used for low-production operations. It is often performed on a pres brake and associated V-dies are relatively simple and inexpensive. Edge bending involves cantilever loading
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