PRACTICAL III: THE BEHAVIOUR OF AMINO ACIDS IN SOLUTION Abstract In this practical the acid-base behaviour of amino acids was assessed. Amino acids are amphoteric. They have the basic (amine) and the acidic (carboxylic) functional groups. These show the same type of equilibrium reactions that all weak acids and bases undergo‚ and the relative amount of each can be altered by adjusting the pH of the solution. For this practical glycine was used as a model to show this unique nature of
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An Introduction to Medicinal Chemistry GRAHAM L. PATRICK Department of Chemistry‚ Paisley University Oxford New York Tokyo OXFORD U N I V E R S I T Y PRESS 1995 Oxford University Press‚ Walton Street‚ Oxford OX2 6DP Oxford New York Athens Auckland Bangkok Bombay Calcutta Cape Town Dar es Salaam Delhi Florence Hong Kong Istanbul Karachi Kuala Lumpur Madras Madrid Melbourne Mexico City Nairobi Paris Singapore Taipei Tokyo Toronto and associated companies in Berlin Ibadan Oxford is a trade
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should be submitted before the class (NO delay is allowed). • Make-up class will be scheduled with you‚ if necessary. UNIST 2011 Spring AME20201 Schedule Week 1-2 2-5 5-6 6-7 8 7‚10 10-11 12-13 14-15 16 Topic General Intro; Atomic Bonding Crystalline Structure; Imperfections Imperfections; Diffusion Mechanical Properties Midterm Exam Dislocation & Strengthening Mechanisms Failure & Phase Diagrams Electrical & Thermal Prop. Magnetic & Optical Prop. Final Exam Chapter 1‚2
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Chemistry Revision F331 Isotopes - atoms with the same atomic number‚ but different mass numbers 131I - radioactive tracer for thyroid. 99Tc for tumours. Radioisotopes - gamma emitters & short half life - long enough to detect‚ but not long enough for damage. Beta particles emitters are more useful than alpha particle emitters because they penetrate more and so are more easily detected. Also‚ less damaging. The half life is the time taken for half the isotope to decay Mass left = initial
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Molecule Polarity PhET Lab A study of electronegativity‚ bond polarity‚ and molecular polarity Introduction: In this atomic-level simulation‚ you will investigate how atoms’ electronegativity value affects the bonds they produce. When two atoms bond‚ a pair of electrons is shared between atoms. Electronegativity is a measure of a single atom’s ability to hoard electrons shared in that bond. In this lab you will work diligently‚ at your own pace‚ to answer a number of questions. To begin‚ from
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and SO42- is K2SO4. ii) The formula of the simplest possible compound containing only C and I atoms is CI4. iii) K2SO4 was formed by ionic bonding and has overall regular/repeated crystal structure‚ it has a melting point of over 1000oc‚ ionic compounds like K2SO4 are also often soluble in water. CI4‚ in contrast‚ was formed by covalent bonding and has an irregular crystal structure. Molecular compounds have lower melting points and CI4 has a melting point of less than 200oc and is unlikely
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proteins‚ only the L-isomer is found. Serine differs from alanine in that one of the methylenic hydrogens is replaced by a hydroxyl group. Serine is one of two hydroxyl amino acids. Both are commonly considered to by hydrophilic due to the hydrogen bonding capacity of the hydroxyl group. Threonine‚ an essential amino acid‚ is a hydrophilic molecule. Threonine is an other hydroxyl-containing amino acid. It differs from serine by having a methyl substituent in place of one of the hydrogens on the β carbon
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SNC 1Y1 – Chemistry Unit Outline February 2014 Day Topic Reading Homework Feb 4th Intro Safety topic 5 concerns Feb 5th Snow Day Feb 6th Safety‚ WHMIS‚ HO Equipment‚ Scientific Method Feb 7th PBL- Salt Blended Learning-Sign on Significant Figures Classification of Matter p.175-178 Salt PBL Feb 14th - HO Sig. Dig. Feb 10th -p.178 #1-6‚8 -Quiz-Safety‚ Equipment‚ Sci Method‚ Sig Dig.Feb 11th Feb 10th Blended Learning 5.2/5.3 Physical/Chemical Properties/changes
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The Grignard Synthesis of Triphenylmethanol Abstract: Grignard synthesis of triphenylmethanol was achieved by use of the Grignard reagent phenyl magesium brominde. The organometallic grignard reagent was synthesized by use of a reflux apparatus recrystallization techniques. Once synthesized it was used in a Grignard reaction that involved nucleophilic addition to a carbonyl in order to make triphenylmethanol. The final product was solidified and recrystallized and spectral data was
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University of Illinois - Springfield Copyright © 2014 The McGraw-Hill Companies‚ Inc. Permission required for reproduction or display. 1 Bonding • Bonding is the joining of two atoms in a stable arrangement. • Through bonding‚ atoms attain a complete outer shell of valence electrons (stable noble gas configuration). • Atoms can form either ionic or covalent bonds to attain a complete outer shell (octet rule for second row elements). • Ionic bonds result from the transfer of electrons from one
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