Preparation and Characterization of Alkene Balacanao‚ Gladys A.1‚ Miranda‚ MarilynI2 1 Student (s)‚ Subject/Section‚ School of Chemical Engineering‚ Chemistry and Biotechnology‚ Mapua Institute of Technology; 2 Professor‚ School of Chemical Engineering‚ Chemistry and Biotechnology‚ Mapua Institute of Technology [pic] ABSTRACT The purpose of this experiment is to prepare cyclohexene form cyclohexanol‚ and know the properties of alkene. The first part of this experiment is preparation of cyclohexene
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Methods: • Two subjects were chosen from Form 2 Sekolah Menengah Sharif Ali test paper • From each subject‚ three 2007 assessment papers were analysed • The analysis of question papers were based on Bloom’s Taxonomy thinking skill levels‚ using key words given by Taylor (n.d) in The Use of Questioning in Raising Higher Order Thinking as guidelines Results: Table 1: The Bloom Taxonomy analysis of Sekolah Menengah Sharif Ali test papers in 2007 which includes the March 2007 First-term test‚
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with as many ions of opposite charge as closely as possible. Usually in the packing arrangement‚ the cation is just large enough to allow te anions to surround it without touching one another. 3. The cation to anion ratio must reflect the stoichiometry of the compound. For MgCl2 the lattice must be an array of chloride anions with only half that number of magnesium ion. An ionic lattice is a structure of millions of atomic formations of an ionic substance‚ structured like building blocks into
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NOT FOR ELECTRONIC STUDENT ACCESS ONLY FOR CLASSROOM USE!! Unit 9: Stoichiometry Practice 1. Differentiate between the significance of the coefficients in a balanced chemical equation and the significance of the subscripts in a chemical formula. · Coefficients show the correct proportions of atoms and molecules in a chemical reaction. They are normal sized numbers placed at the beginning of the chemical formulas in a chemical reaction during the process of balancing. They tell how many of an entire
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CHEMISTRY-LAB 2013 Chemistry-LAB Welcome to the Laurel Springs School Chemistry course! This course is designed to give you a thorough understanding of the fundamental principles and methods of the study of chemistry. Chemistry offers answers to many questions about why the world works the way it does. Have you ever wondered why leaves are green‚ why some metals rust and others do not‚ or how a baking soda & vinegar volcano works? If so‚ this is the course for you! For this course‚ you will be
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WJEC CBAC AS/A LEVEL GCE in Chemistry REVISION AID UNIT 1 AS UNIT CH1 – Controlling and Using Chemical Changes (in order to make things‚ produce energy and solve environmental problems) Preamble This unit begins with some important fundamental ideas about atoms and the use of the mole concept in calculations. Three key principles governing chemical change are then studied‚ viz. the position of equilibrium between reactants and products‚ the energy changes associated with a
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Quantitative Determination of Total Hardness In Drinking Water By Complexometric EDTA Titration R. A. J. Cadiz1 and J. M. Nael2 1Institute of Biology‚ College of Science 2National Institute of Geological Sciences‚ College of Science University of the Philippines‚ Diliman‚ Quezon City‚ Philippines Date Submitted: May 9‚ 2013 Abstract This experiment is about the determination of water hardness through the use of complexometric EDTA titration. Determination of water hardness is important to
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completion of this unit‚ students will have gained an understanding of how atoms and molecules interact with each other and how this affects their bonding‚ reactivity‚ 3D structure and physical properties. A number of important topics such as stoichiometry‚ intermolecular forces‚ thermodynamics‚ kinetics‚ equilibria‚ and electrochemistry will be developed in order to prepare students for a deeper exploration of chemistry. The concepts developed within the lectures and workshops are complemented through
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Chem 1252‚ General Chemistry I Lab Johnson Acid-Base Titrations Introduction Titration is a convenient quantitative method for accurately determining unknown concentrations of solutions. A necessary requirement for its use is that a standard solution (a solution of known concentration) reacts chemically with the solution whose concentration is being determined. The standard solution is added to a solution of unknown concentration until all of the unknown solution has reacted. From the known quantity
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Lecture 12 Chapter 6 6.1 Thermochemistry: Energy & units (p.227) From observation we know‚ that - some chemical reactions begin as soon as the reactants come into contact with each other (precipitation reactions) - some reactions are slow or even so slow at room temperature that even lifetime is not enough to observe a measurable change (rusting of iron‚ tarnishing silver) Also‚ almost all chemical reactions involve exchange of heat (or energy): in combustion reactions
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