Distinction of pH levels of Orange Juice and Milk of Magnesia in comparison to Distilled Water Cooper‚ A.‚ Do‚ J.‚ Francois‚ F.‚ Olaleye‚ O. Lab Section LA: 06/20/2012 Introduction pH is the measurement of the concentration of hydrogen ions in a certain solution. Solutions or substances that have a higher concentration of hydrogen ions are considered acidic on the pH scale. Therefore‚ a solution with low concentration of hydrogen ions is basic on the pH scale. The pH scale is a universal means
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for the pH concentration experiment were put together by using a 10ml-graduated cylinder to obtain 4ml of each pH buffer to insert into cuvettes‚ a micropipette was then used to obtain 0.5ml of catechol and 0.5ml of the catechol oxidase. The pH buffer was made first to avoid any denaturation of the catechol oxidase. Our positive control for this experiment was pH 7 because that is the pH level of most cell membranes in the cytoplasm (Whitson‚ 2016.) Our negative controls varied for each pH buffer
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When it comes to organic food versus non-organic food‚ one of the most important questions that most diet-enthusiasts and food curious people want to ask is how to tell the difference. In other words‚ how to identify or differentiate organic food from the conventional food? Frankly and honestly speaking‚ there’s really no way to tell the difference between organic food and the conventional food we are forced to rely on the people selling us the food to be truthful. Luckily for us however‚ there
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Food1120 Lecture: Foods in the News Patrick Spicer p.spicer@unsw.edu.au APril 16‚ 2014 Topic: contemporary coverage of food topics • Your area of study is central to people’s lives and will thus be a regular topic of conversation and news. • As a trained scientist‚ you will have knowledge and experience these people don’t. You must use it well for your own benefit and others’. • We will talk today about how to read and assess news coverage of food and other scientific
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chemistry lab report : reaction of alcohol CHEMISTRY LAB REPORT SK026 SEMESTER 2 SESSION 2011/2012 TITLE :REACTION OF ALCOHOL DATE : NAME : MATRIC NO : PARTNER : PRACTICUM : SUPERVISOR : Title : Reaction Of Alcohol Objectives : 1. To classify alcohol 2. To study the chemical properties of alcohols Introduction: Alcohol is a class of organic compound containing hydroxyl group‚ OH as the
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TITLE: THE EFFECT OF HEATING DIFFERENT SUBSTANCES INTRODUCTION: In this exercise‚ it was required to observe carefully what happened when certain substances were heated in a burner‚ and to note the appearance of the residue after heating. AIM: To observe the effects of heating different substances. MATERIALS: Hard glass test tubes Powered samples of Lead (II) nitrate Copper (II) sulphate Ammonium chloride Zinc sulphate Basic copper (II) carbonate‚ CuCO3. Cu(OH)2
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“why organic?” Our campaign‚ “why organic?”‚ includes a series of print ads that increase awareness to consumers about chemically injected foods. Our campaign is differentiated from other campaigns by the multiple perspectives our ads take while sharing a common theme in design and overall point. Humorous‚ fearful‚ and informative pictures and facts are used to show consumers the connection between non-organic foods and disease‚ cancer‚ and other disorders in consumers. Although organic foods are
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Department of Chemistry Extraction and Sublimation Experiment #4 10/02/13 Introduction Caffeine is a stimulant found in tea‚ coffee‚ cocoa‚ OTC medication‚ and cola drinks.It stimulates the brain and the central nervous system‚ so that a person feels less tired and more alert. The purpose of this lab is to determine the amount of caffeine in tea. The major component of tea is cellulose which is a polymer of glucose. Materials Lab coat Goggles Graduated cylinder 1 tea bag (1
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The gifts of chemistry are a boon to mankind. Its applications in home and industry are many. Right from purified drinking water and motor car to cane sugar and mobile phone‚ all these have been made possible only through processes in chemistry at some stage or other of production. New discoveries‚ processes‚ and products are an integral part of this fascinating discipline. It offers a fertile ground for those endowed with intellectual curiosity and a passion for scientific research. you must
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Br-Br 2Br Provides the energy for homolytic fission of Br-Br bond. Visible and infra-red radiations are unable to break covalent bonds while UV light can‚ because one quantum of UV light has sufficient energy (396 kJmol-1) to break the typical covalent bond (with BE of about 300 kJmol-1) while the other two do not. | Platinum Catalyst; Reforming of straight chain Alkanes | Used as catalyst. Benzene can be formed from the reforming of hexane. | Aqueous Br2 vs. Br2/NaCl; Electrophilic Addition reaction
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