Iodine

present in different sample solutions. The tests were the iodine test, Benedict’s test, and the biuret test. To begin, the iodine test was used to identify which solutions contained glycogen or starch. If the solution tested negative, it stayed the yellow colour of the iodine solution. Whereas, if the solution tested positive for glycogen it turned a red-brown colour (Morris, 1946). Additionally, the solution turned a blue-black colour if the iodine reacts starch (Bailey & Whelan, 1961). For…

as the Iodine, Benedict, and Biuret tests, on known solutions of the organic compounds listed to learn their positive tests and, afterwards test different…

macromolecules, which were determined by the use of various tests, as well as designated negative and positive control samples. Chemical samples may be experimentally identified as specific macromolecules through treatment with Benedict’s solution, the iodine test, or the Biuret test; each, when positive, identifying reducing sugars, starch or glycogen, and protein, respectively (Cardoso, M. B., Samios, D., da Silveira, N. P., Rodembusch, F. S., & Stefani, V., 2007; Kumar J, 2011). This…

relatively very similar. Lastly, through the acetic acid test, and the iodine test, the results matched up to corn starch 's properties. When the iodine test was done on PA, it matched up to the results of corn starch, turning purple and clumping together. China will receive LB, after its characteristics matched up with the dichotomous key, MD and WC, after its density matched up with its known density, and PA, after the iodine test proved it was corn…

Nutrient Testing Lab Purpose: Test different food items to see if certain nutrients are present. Hypothesis: if iodine, paper or certain solutions is present in the foods we test then it has one of the nutrients because it is detectable by a black, blue, yellow color when they are applied. Materials: flour, gelatin, milk, Iodine, brown bag, honey, cooking oil, potatoes, test tubes, peanut butter, eggs, paper towels, Chem-plate, hot water bath, Biuret's solution, Benedict's solution, chocolate…

therefore it increases the releasing of TSH to stimulate thyroid glans to release T3 (tri-iodothyronine) and T4 (thyroxin) hormones. iii.) It appears that the reason for hypothyroidism in this case is long lasting inadequate level of iodine in the diet. Where is no iodine , there is no secretion of thyroid hormones. d.)…

symbol, atomic weight and its characteristic chemical and physical properties ("Periodic Table,"). In this research paper, the element iodine will be discussed along with its history, discovery, uses in the medical field, and other trends. Iodine was discovered by a French chemist named Bernard Courtois in 1811. While running experiments on seaweed he stepped on iodine. Bernard Courtois was a French chemist born in Dijon, France on February 8, 1777, in a house just across the street from the…

unstable, interhalogens that seemingly violate the octet rule. Synthesis reaction: KClO3 + I2 + 6HCl → KCl + 2ICl3 + 3H2O Decomposition reaction: I2Cl6 → 2ICl + 2Cl2 The halogens used within this experiment consisted of Iodine and Chlorine to produce an oxidizing reagent Iodine trichloride. Due to electron orbitals and their interactions…

Experiment Summary The purpose of this experiment was to determine the copper content of brass using iodometry. This was accomplished by creating a thiosulfate solution and standardizing it by titrating using a known amount of KIO3. The second part of the experiment involved preparing a brass sample and allowing copper to react with excess iodide to form I2. The resulting I2 was then titrated with the thiosulfate standard. Both the molar concentration of thiosulfate and the weight % copper…

Dialysis Tubing Nicholas MacLean and Erin Girhiny Wednesday, October 19th, 2016 Mrs. Booth SBI 4U Purpose The movement of different molecules through dialysis tubing was observed. Materials Starch Glucose Water Dialysis Tubing Iodine String Scapula Scale Benedict 's Solution Test Tubes Test Tube Rack Hot Plate Procedure Lab was demonstrated by teacher. Observations Observation of Physical Properties After Time and Heat Initial Observations Observations After 24 hours…