Heating A. Benedict’s Solution +Heat B. Iodine Solution C. Biuret Reagent 1. Protein Solution Purple Light Purple Dark Orange Light Purple 2. Glucose Solution Light Blue Orange-yellow Light Orange Transparent
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Giancarlo Vidal CHM 1033 10/16/14 “Role of the Trace Elements - Iron‚ Zinc‚ Chromium‚ Copper‚ Iodine‚ and Selenium in the human body” Trace elements are necessary by the body for normal growth‚ development and physiology. Even though many of the elements are required in only very small quantities‚ they do play a very significant role in keeping the body functioning efficiently. A surplus or shortage of the trace elements in our bodies can equally threaten human health. Iron is an integral part of
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through E and the evidence sample. The forensics then conducted a vinegar test and an iodine test‚ to test for Co² and starch. Finally‚ a heat test was performed‚ and the changes were documented. Based on my team’s results‚ Au Bond Foot Powder Extra strength was found at the crime scene. I know this‚ because the forensic team tested all of the ingredients and the evidence and compared them. I
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BIOLOGICALLY IMPORTANT MOLECULES Abstract Compounds containing the element carbon‚ called organic compounds‚ are the most important substances that make up living organisms. There are thousands and thousands of different organic compounds. To identify the major types of organic compounds in living organisms ‚ several biochemical test were used . Introduction Organic molecules are those primarily made up of carbon‚ hydrogen and oxygen. The common organic compounds of living organisms are
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Reactions & Nuclear Chemistry Assessment Task Assignment Question 1 Produce a summary reactions sheet for all the chemical reactions encountered in production of materials. Your summary should contain the following components a) Name of reaction b) General word equation c) Balance formulae equation d) An example of the reaction Question 2 What types of instruments and processes are used to detect radiation? The properties of nuclear radiation are used to detect their
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reaction: The bromine or iodine used in the titration is generated by adding an excess amount of KBr or KI to an acidified solution of the sample according to the following reaction: BrO3- + 5 Br- + 6 H+ 3 Br2 + 3 H2O IO3- + 5 I- + 6 H+ 3 I2 + 3 H2O Sodium thiosulfate solutions can be standardized by direct titration of the I2 generated in in the KIO3 reaction using the starch-iodine complex as the indicator (remember that the iodine is actually in the form of
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test tube. 3) Stand the test tube in the bottle as shown below. 4) Weight the whole apparatus. 5) Record the weight‚ now turn the bottle over slowly to allow the solutions to mix. Record the new weight. 6) Repeat the procedure‚ using Potassium Iodine in the bottle and Lead Nitrate in the test tube. After performing the procedures you record your data. Laboratory Report The title of the lab that we completed in class was The Law of Conservation of Matter. The purpose of this
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hyperthyroidism‚ including: • Eating too much of foods that contain iodine • Graves disease (most cases of hyperthyroidism) • Inflammation (thyroiditis) of the thyroid due to viral infections‚ after pregnancy‚ or other causes • Noncancerous growths of the thyroid gland or pituitary gland • Some tumors of the testes or ovaries • Taking large amounts of thyroid hormone • Getting medical imaging tests with contrast dye that has iodine Symptoms Common symptoms include: • Difficulty concentrating
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infection. Causes of Hypothyroidism Radiation therapy can also cause hypothyroidism. When radiation damages the cells‚ the thyroid gland has to work harder. Radioactive iodine treatment can also destroy the thyroid gland. Surgery and medications can also cause an underactive thyroid. The human body does not produce iodine‚ and iodine deficiency can cause hypothyroidism.
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determined by analyzing the amount of iodine (I2) formed. Two chemical reactions are useful to determining the amount of iodine is produced. 1) I2(aq) + 2S2O32-(aq) 2I-(aq)+S4O62-(aq) 2) I2(aq) + starch Reaction 2 is used only to determine when the production of iodine is occurring by turning a clear colorless solution to a blue color. Without this reaction it would be very difficult to determine how much iodine is being produced‚ due to how quickly thiosulfate and iodine react. However this reaction
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