Separation of Amino Acids by Paper Chromatography Chromatography is a common technique for separating chemical substances. The prefix “chroma‚” which suggests “color‚” comes from the fact that some of the earliest applications of chromatography were to separate components of the green pigment‚ chlorophyll. You may have already used this method to separate the colored components in ink. In this experiment you will use chromatography to separate and identify amino acids‚ the building blocks of proteins
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Introducton : The most common macromolecules found in living organisms are carbohydrates ‚ lipids‚ proteins and nucleic acids. Briefly‚ the meaning of macromolecules is that they normally contain two or more molecules in them and their main functions are to store energy‚ information and much more. Most foods are known to be combinations of macromolecules. While some of these compounds can be detected by taste tests‚ many cannot. Scientists then use certain tests to determine the presence of
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Nitric acid is a highly reactive oxidizing agent used in making fertilizers‚ explosives‚ and rocket fuels‚ and in a wide variety of industrial metallurgical processes. It is also a component of acid rain. Its chemical formula is HNO3 and it has been known as “aqua fortis”‚ which means strong water‚ to alchemists. It is a transparent‚ colorless to yellowish‚ fuming corrosive liquid. Nitric acid is a strong acid and therefore it completely dissociates in water. It has a gravity of 1.41 and the concentration
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Acids and Bases Q1.This question is about several Brønsted–Lowry acids and bases. (a) Define the term Brønsted–Lowry acid. ........................................................................................................................ ........................................................................................................................ (1) (b) Three equilibria are shown below. For each reaction‚ indicate whether the substance immediately above the box is acting
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Business Management (BM2223A) Lecturer’s name : Madam Suchitra Title : ACID RAIN Order : Topical Order General Purpose : To inform Specific purpose : Acid rain is harmful to environment that it can damage everything over a period of time because it makes the living things in the environment die. Central idea : To inform my audience about the causes‚ effects and what can be done to reduce of acid rain. Introduction I. What would you do if you knew poison was falling
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The speed of chemical reactions – class experiment By Julia Shuker Year 10 science – Miss Phillips – Term 2 – 2013 – Julia Shuker Aim The aim of the experiment was to investigate the factors that increased or decreased the speed of chemical reactions between two different chemical reactions. Hypothesis If certain factors‚ such as concentration‚ temperature‚ catalyst and surface area are increased then the reaction rate will also increase due to the particles
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Citric acid cycle From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search [pic] [pic] Overview of the citric acid cycle The citric acid cycle — also known as the tricarboxylic acid cycle (TCA cycle)‚ the Krebs cycle‚ or the Szent-Györgyi-Krebs cycle‚ [1][2] — is a series of enzyme-catalysed chemical reactions‚ which is of central importance in all living cells that use oxygen as part of cellular respiration. In eukaryotic cells‚ the citric acid cycle occurs in the matrix of the mitochondrion
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(or iron oxide) forms: • Howstuffworks.com. (2009). How does rust work? Retrieved April 3‚ 2009‚ from http://www.howstuffworks.com/question445.htm These sources describe what acid rain is: • Buchdahl‚ J. (2003). Acid rain. Retrieved April 3‚ 2009‚ from http://www.ace.mmu.ac.uk/kids/acidrain.html • Acid Rain Students Site. (n.d.). Retrieved April 3‚ 2009‚ from http://www.epa.gov/acidrain/education/site_students/index.html For help creating bar charts‚ try this website: • National
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Eric McKenzie Geophysical Science Honors February 14th‚ 2014 ACID RAIN 1. Acid rain is rainfall created by pollution in the atmosphere. When the rainfall occurs‚ it almost always causes harm to the environment. 2. Acid rain is caused by the release of certain compounds into the air‚ including sulfur dioxide and nitrogen oxides. These compounds mix and react with chemicals such as oxygen and water and form acid rain. 3. Acid rain can harm the environment by acidifying lakes and streams‚ which greatly
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experiment‚ the online simulation was used to determine which substances were endothermic or exothermic when dissolved in water. According to the simulation‚ sodium chloride and ammonium chloride was observed to be endothermic. Calcium chloride‚ sodium acetate‚ sodium carbonate‚ and lithium chloride was observed to be exothermic. As sodium chloride and ammonium chloride was observed to be endothermic‚ those two salt substrates was not used in the experiment as the goal of the experiment was to increase
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