~ Collins CONCISE REVISION COURSE ® • emlst ,- Anne lindale Collins CONCISE REVISION COURSE ® • emlsf " Anne lindale Collins HarperColiins Publishers Ltd The News Building I London Bridge Street London SE I 9GF First edition 2016 1098765432 © HarperColiins Publishers limited 2016 ISBN 978-0-00-815788-3 Collins® is a registered trademark of HarperCollins Publishers limited Concise Revision Course: CSEC® Chemistry is an independent publication and has not been authorised, sponsored or otherwise approved by CXC®, CSEC®is a registered trade mark of the Caribbean Examinations Council (CXC). www.collins.co.uklcaribbeanschools A catalogue record for this book is available from the British Library. Typeset by QBS Printed in Italy by Grafica Veneta S.p.A. All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior permission in writing of the Publisher. This book is sold subject to the conditions that it shall not, by way of trade or otherwise, be lent, re-sold, hired out or otherwise circulated without the Publisher's prior consent in any form of binding or cover other than that in which it is published and without a similar condition including this condition being imposed on the subsequent purchaser. If any copyright holders have been omitted. please contact the Publisher who will make the necessary arrangements at the first opportunity. Author:Anne Tindale Publisher: Elaine Higgleton Commissioning Editor: Peter Dennis Managing Editor: Sarah Thomas Copy Editor: Delphine Phin Editor:Aidan Gill Proofreader:Tim Jackson Artwork: QBS Cover: Kevin Robbins and Gordon MacGilp Acknowledgements The publishers would like to thank the following for permission to use their photos in this book: p72:Anne Tindale; p89:Anne Tindale; pi 03:Andre Nitsievsky/Shutterstock; p 134: Photo smileJShutterstock; p I461:Toa55/Shutterstock; p 146r: Lodimup/Shutterstock; p 1671: PChStudiosJShutterstock; p 167r: Mark Sykes/Science Photo library; p 178: Mikadun/Shutterstock; p I 841:ThamKC/Shutterstock; p 184r: Mexrix/Shutterstock; p 186:Anne Tindale; p 187:Anne Tindale Contents The pathway to success v 1 The states of matter 1 The particulate theory of matter Evidence to support the particulate theory of matter Uses of osmosis Types of particles that make up matter The three states of matter Changing state Revision questions 1 Reversible reactions Revision questions 50 50 8 The mole concept 51 Relative atomic, molecular and formula masses 51 The mole 52 The mole and mass 52 The mole and number of particles 53 The mole, mass and number of particles 54 The mole and volumes of gases 55 The mole, mass, number of particles and gas volume 55 Revision questions 56 The mole and chemical formulae 56 Percentage composition 58 The mole and solutions 58 Revision questions 59 The mole and chemical reactions 60 Revision quest-ions 63 3 3 4 4 6 2 Pure substances, mixtures and separations 7 Pure substances 7 9 9 11 12 16 17 Mixtures Solutions, suspensions and colloids Solubility Separating the components of mixtures The extraction of sucrose from sugar cane Revision questions 3 Atomic structure Subatomic particles The arrangement of subatomic particles in an atom Isotopes Revision questions 4 5 Structure and bonding 7 18 19 20 23 The periodic table and periodicity 24 The historical development of the periodic table The modern periodic table Trends in Group 11- the alkaline earth metals Trends in Group VII - the halogens Trends in Period 3 Revision questions 6 18 24 24 26 27 28 29 30 Chemical formulae Ionic bonding Covalent bonding Drawing dot and cross bonding diagrams Metallic bonding The structure and properties of solids Revision questions 30 32 36 37 39 39 43 Chemica l equations 44 Writing balanced equations Ionic equations Revision questions 47 48 Types of chemical reaction 49 Synthesis reactions Decomposition reactions Single displacement reactions Ionic precipitation reactions Oxidation-reduction reactions Neutralisation reactions 49 49 49 49 50 50 44 9 Acids, baS1?S and salts 64 Acids Bases Distinguishing between acids and alkalis The strength of acids and alkalis Amphoteric oxides and hydroxides Classification of oxides Revision questions Salts Methods used to prepare salts Salts in everyday life Neutralisation reactions Volumetric analysis Revision questions 64 67 68 68 69 70 70 71 10 Oxidation-reduction reactions Oxidation-reduction reactions in terms of electrons Oxidation number or oxidation state Oxidation-reduction reactions in terms of oxidation number Using oxidation numbers to recognise redox reactions Oxidising and reducing agents Tests for oxidising and reducing agents Oxidation-reduction reactions in everyday activities Revision question s 11 Electrochemistry 72 76 77 78 81 82 82 82 84 85 86 88 89 90 91 Predicting reactions using the electrochemical series of metals Predicting reactions using the electrochemical series of non-metals Electrical conduction Electrolysis Electrolysis of molten electrolytes Electrolysis of aqueous electrolytes Revision questions Contents 91 92 92 93 95 95 99 iii Quantitative electrolysis Industrial applications of electrolysis Revision questions 12 Rates of reaction Measuring rates of reaction The collision theory for chemical reactions Rate curves for reactions Factors that affect rates of reaction The effect of changing different factors on rate curves Revision questions 13 Energetics 100 102 105 106 106 106 107 107 109 110 111 Exothermic and endothermic reactions Breaking and forming bonds during reactions Enthalpy changes during reactions Energy profile diagrams Calculating enthalpy changes Revision questions 111 111 111 112 113 116 Exam-style questions - Chapters 1 to 13 117 14 Organic chemistry - an introduction 123 Bonding in organic compounds The structure of organic molecules Formulae of organic compounds Homologous series Structural isomerism The alkanes: CnH2n+2 The alkenes: CnHzn Alcohols: CoH'o>,OH or R- OH Alkanoic acids: CoH' o.,COOH or R-COOH Revision questions 123 124 124 125 126 128 129 131 132 132 15 Sources of hydrocarbon compounds 134 Natural sources of hydrocarbons Fractional distillation of crude oil Cracking hydrocarbons Revision questions 134 134 135 n6 16 Reactions of carbon compounds 137 The alkanes: C n H2n +2 The alkenes: CoH,o Distinguishing between an alkane and an alkene Uses of alkanes and alkenes Revision questions Alcohols: CoH'o>,OH or R-OH Alkanoic acids: C" H,,,., COOH or R- COOH Esters: CnHzn+1COOCxH2x+l or R-COO-R' Soapy and soapless detergents Revision questions 137 138 17 Po lymers 139 140 141 141 143 143 145 147 148 148 150 Formation of polymers Uses of polymers Impact of synthetic polymers (plastics) on the environment , Revision questions 150 151 Exam-style questions - Chapters 14 to 17 152 Contents 18 Characteristics of metals Physical properties of metals Chemical properties of metals Reactions of metal compounds Revision questions 19 The reactivity, extraction and uses of metals The reactivity series of metals The extraction of metals from their ores Extraction of aluminium Extraction of iron Uses of metals Alloys and uses of alloys Revision questions 20 Impact of metals on living systems and the environment Corrosion of metals The importance of metals and their compounds in living organisms Harmful effects of metals and their compounds Revision questions 21 Non-metals Physical properties of non-metals Chemical properties of non-metals Behaviour of non-metals as oxidising and reducing agents Laboratory prepa·ration of gases Uses of carbon dioxide and oxygen Uses of non-metals and their compounds Harmful effects of non-metals and their compounds Revision questions 22 Water The unique properties of water Consequences of water's solvent properties Treatment of water for domestic use Revision questions 23 Green Chemistry The twelve principles of Green Chemistry Revision questions 24 Qualitative analysis 155 155 155 156 157 158 158 159 160 160 162 162 164 165 165 165 166 167 168 168 169 170 170 172 173 176 178 179 179 180 181 182 183 183 184 185 Identifying cations Identifying anions Identifying gases Revision questions 185 188 190 191 Exam-style questions - Chapters 18 to 24 193 Appendix - The Periodic Table 196 Index 197 The pathway to success About this book This book has been written primarily as a revision course for students studying for the CSEC· Chemistry examination. The facts are presented concisely using a variety of fo rmats which makes them easy to understand and learn. Key words are highlighted in bold type and important definitions which must be learnt are written in italics and highlighted in colour. Annotated diagrams and tables have been used wherever possible and worked examples have been included where appropriate. Questions to help test knowledge and understanding, and provide practice for the actual examination, are included throughout the book. Th e following sections provide valuable information on the format of the CSEC· examination, how to revise successfully, successful examination technique, key terms used on examination papers and School-Based Assessment. The CSEC® Chemistry syllabus and this book The CSEC· Chemistry syllabus is available online at http://cxc-store.com. You are strongly advised to read through this syllabus carefully since it provides detailed information on the specific objectives of each topic of the course, School-Based Assessment (SBA) and the format of the CSEC· Examination. Each chapter in this book covers a particular topic in the syllabus. • Chapters 1 to 13 cover topics in Section A, Principles of Chemistry • Chapters 14 to 17 cover topics in Section B, Organic Chemistry • Chapters 18 to 24 cover topics in Section C, Inorganic Chemistry At the end of each chapter, or section within a chapter, you will find a selection of revision questions. These questions test your knowledge and understanding of the topic covered in the chapter or section. At the end Chapters 13, 17 and 24 you will find a selection of exam-style questions which also test how you apply the knowledge you have gained and help prepare you to answer the different styles of questions that you will encounter in your CSEC· examination. You will find the answers to all these questions online at www.collins.co.uk/caribbeanschools. The format of the CSEC® Chemistry examination The examination consists of two papers and your performance is evaluated using the following three profiles: • Knowledge and comprehension • Use of knowledge • Experimental skills The pathway to success V