Iodine

Benedict’s reagent, Barfoed’s reagent and iodine solution, these reagents provided the investigation with credible and accurate results as the reagents stated above give good indicative results to the types of carbohydrates present. Carbohydrates come in several different forms e.g. Starch is a polysaccharide and consists of thousands of monosaccharide sub-units which form a chain – polysaccharides (poly – many) are not readily soluble in water but react with iodine…

solution and a different concentration of amylase solution ranging from 0 μL to 1000 μL. The test tubes were then left to soak in a 37°C water bath before having 2 mL of 1 M hydrochloric acid added to a test tube of pure amylase solution. Lugol’s iodine was used to test for the existence of starch in the samples, while Benedict’s reagent detected any broken-down glucose. The same procedures were then performed waiting 5, 10, and 15 minutes before deactivating the amylase. Then again repeating…

the reaction of halogenoalkanes with aqueous alkali and water which contains dissolved silver nitrate. Halogenoalkanes are alkanes which have one or more hydrogen atoms replaced by halogen atoms such as fluorine (F), chlorine (Cl), bromine (Br) and iodine (I) which are the elements in group 7 in periodic table. Halogenoalkanes have the general formula, RX, whereby R is an alkyl or substituted alkyl group and X is any of the halogen atom. Besides, halogenoalkanes can also be classified into three…

A radioactive isotope an element with different masses meaning the neutron to proton ratio is uneven which makes the nucleus unstable and also removes energy by releasing radiation in the form of alpha, beta, and gamma rays. Radioactive isotopes have a high pertinence in the medical field especially for cancer. Cobalt-60 is a radioactive isotope that is widely utilized as a radiation source to suppress the development of cancer. Cobalt-60 therapy is used to let the doctor give higher doses of…

Abstract The purpose of this experiment was for the researcher to study one of the process of digestion which is absorption, and seeing if starch and glucose could diffuse through the dialysis tubing, and could the two be absorbed by the small intestines, and if so or not, why? To begin, in this experiment, the researchers gathered different solutions, such as, starch and glucose, filling half of each mixtures in a single dialysis tube. The researchers carefully then rinsed and pat dry the…

white powders were; icing sugar, cornstarch, aspirin powder, baking soda, baking powder. To test it out they mixed each white powder including the mystery powder with four different liquids. The liquids were; water, universal indicator, vinegar, and iodine. For example, when they mix the four liquids with the powder, one of the powders should have the exact same chemical and physical reactions as the mystery powder does. If none of the powders match the…

the other chemical that sustains the body, affects the metabolism system, the cardiac system and the body as a whole. Causes of hypothyroidism include, radiation therapy, treatment for hyperthyroid, autoimmune disease, thyroid surgery, pregnancy, iodine deficiency and certain medications (Buttaro, Trybulski, Bailey, & Sandberg-Cook, 2013). Signs and symptoms of hypothyroidism varies based on its severity, but typical include, fatigue, puffy face, dry skin, increased cold sensitivity, increased…

Brandon Ugbesia 9/24/2015 Steps and Procedures 1. Blend a 120 g sample of each fruit separately a in a blender with about 50 mL of distilled water. Strain any extra pulp with a cheesecloth. You should have at least around 120 ml of substance. 2. Separate each of the liquids into half and put each half into its own separate individual…

tubes to equilibrate in their temperature baths for 5 minutes. During these 5 minutes, add 3 drops of iodine into each well at the 0 minutes row, the first well of each temperature column. Once the 5 minutes are up, without removing the tubes from their temperature baths, use a pipette to transfer 3 drops of the starch solution from each temperature treatment to the 0 minutes row where the iodine was recently placed. Label each of the transfer pipettes with the corresponding temperature so they…

Of the 2 million iodine deficient people worldwide, approximately 50 million people suffer from serious symptoms of iodine deficiency [8]. The symptoms of iodine deficiency are multifaceted. Sufferers may experience mental retardation, thyroid enlargement, hypothyroidism, lowered immunity and decreased organ function. Supplementation through…