THE FACTS ON FILE CHEMISTRY HANDBOOK Revised Edition THE FACTS ON FILE HANDBOOK OF CHEMISTRY CHHEANMDIBSOOTRK Y THRE eDvIiAseGdRA EMdi GtiRoOnUP THE DIAGRAM GROUP The Facts On File Chemistry Handbook, Revised Edition Copyright © 2006, 2001 by Diagram Visual Information Ltd. Diagram Visual Information Ltd Editorial directors David Harding, Moira Johnston Science editor Eleanora von Dehsen Editors Nancy Bailey, Jean Brady, Paul Copperwaite, Eve Daintith, Bridget Giles, Jane Johnson, Reet Nelis, Jamie Stokes Design Richard Hummerstone, Edward Kinsey Design production Anthony Atherton, Carole Dease, Oscar Lobban, Lee Lawrence Artists Susan Kinsey, Lee Lawrence, Kathleen McDougall Research Peter Dease, Catherine & Neil McKenna, Contributors Michael Allaby, Martyn Bramwell, John Daintith, Trevor Day, John Haywood, Jim Henderson, David Lambert, Catherine Riches, Dr Robert Youngson All rights reserved. No part of this book may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval systems, without permission in writing from the publisher. For information contact: Facts On File, Inc. An imprint of Infobase Publishing 132 West 31st Street New York NY 10001 Library of Congress Cataloging-in-Publication Data The Facts on File chemistry handbook / The Diagram Group. —Rev. ed. p. cm. Includes bibliographical references and index ISBN 0-8160-5878-4 I. Chemistry—Handbooks, manuals, etc. I. Diagram Group. QD65.F33 2006 540—dc22 2005055496 Facts On File books are available at special discounts when purchased in bulk quantities for businesses, associations, institutions, or sales promotions. Please call our Special Sales Department in New York at 212/967-8800 or 800/322-8755. You can find Facts On File on the World Wide Web at http://www.factsonfile.com Cover design by Cathy Rincon Printed in the United States of America VB DIAG 10 9 8 7 6 5 4 3 2 1 This book is printed on acid-free paper. INTRODUCTION THE FACTS ON FILE CHEMISTRY HANDBOOK, Revised Edition offers students a full view of this vital branch of science, in the form of a one-stop reference. The Revised Edition expands greatly on the information available in the previous edition, with the inclusion of four new sections—an A–Z of key advances in the field of chemistry; a list of Nobel Prize winners in chemistry; listings of important science and chemistry associations; and listings of key science and chemistry Web sites. The biography and chronology sections have been updated and the glossary expanded to include charts and graphs illustrating important concepts. Finally, the index has been extended and completely revised to make searching even easier. THE CHEMISTRY HANDBOOK, Revised Edition features the following components: GLOSSARY Almost 1,500 entries, many accompanied by illustrations and now with 14 new large diagrams and charts, are provided here, to aid students’ understanding of the specialized terminology of chemistry. BIOGRAPHIES Biographies of more than 300 people are provided here—not only the giants of chemistry, but also many of those whose achievements may have gone unnoticed but whose discoveries have pushed forward the world’s understanding of chemistry. Updated to 2005. CHRONOLOGY This section covers 9,000 years of events in the history of chemistry that have influenced our lives more than wars, political changes, and world rulers. Now extended to 2005. KEY ADVANCES This entirely new A–Z list of over 140 important advances in chemistry enables students to find quick information on who invented or discovered what and when. NOBEL PRIZE WINNERS The newly added list of Nobel Prize winners in chemistry is complete to 2005. Each entry includes the award citation as well as the nationality and dates of birth and death of the winners. CHARTS & TABLES This section brings together charts and tables in key areas of chemistry. Nine new pages have been added in the Revised Edition. ASSOCIATIONS This entirely new section provides the names, addresses, telephone numbers, and Web addresses of 30 important associations. WEB SITES Another entirely new section, listing 50 selected Web sites for students, teachers, and library patrons. CONTENTS SECTION ONE Glossary 7 SECTION TWO Biographies 129 SECTION THREE Chronology 183 SECTION FOUR Key advances 219 SECTION FIVE Nobel Prize winners 229 SECTION SIX Charts & Tables 241 SECTION SEVEN Associations 257 SECTION EIGHT Web sites 261 INDEX 265 SECTION ONE GLOSSARY 7 GLOSSARY absolute temperature – actinides absolute temperature (thermodynamic temperature) Based on absolute zero. The unit (the kelvin) is 1/273.16 of the temperature of the triple point of water and is equivalent to one degree Celsius (1°C). absolute zero The lowest possible temperature. Zero on the Kelvin scale. abundance A measure of the quantity of a substance occurring in a particular area (an element in the Earth’s crust or an isotope in a sample of an element). It is expressed in percentage or parts per million. Ac Symbol for the element actinium. accelerator A chemical that increases the rate of a chemical reaction. accumulator or battery A device that uses chemical energy to store electrical energy. acetaldehyde See ethanal. acetic acid See ethanoic acid. acetone See propanone. acetylene See ethyne. acid Any substance that releases hydrogen ions when added to water. It has a pH of less than 7. acid anhydrides Compounds that react with water, forming acids, for example, the acid anhydride SO that reacts to make the acid H SO . 2 2 4 acid-base reaction An acid and a base react together to form a salt and water only. acidic oxide The oxides of nonmetals that form acidic solutions in water. An acidic oxide reacts with a base to form salt and water only. acidification The fall in pH in a solution caused by the addition of an acid. This is seen in nature in the pollution of lakes, rivers, and groundwater by acid rain. acid, organic See organic acid. acid rain A form of pollution where rain dissolves acidic gases (mainly sulfur dioxide) from the air. Sulfur dioxide is released into the atmosphere by the burning of fossil fuels. acid salt A salt of a polybasic acid in which not all the hydrogen atoms have been replaced by a metal or metal-like group (e.g., ammonium group). acid, standardization of See standardization of solutions. actinides (actinoids) The name of the group of elements with atomic numbers from 89 (actinium) to 103 (lawrencium). All are radioactive and have similar properties to actinium. As their outer electronic structure is very similar (the f orbital in their fifth shell is being filled), they have similar chemical properties. GLOSSARY absolute temperature – actinides 8 actinium – air, liquid GLOSSARY actinium Element symbol, Ac; silvery metallic element; Z 89; A(r) 227; 3 density (at 20°C), 10.07 g/cm ; m.p., 1,050°C; radioactive; name derived from the Greek aktis, “ray;” discovered 1899. actinium series One of the naturally occurring radioactive series. activated complex A short-lived association of atoms that is formed during a chemical reaction. activation energy The energy barrier to be overcome in order for a reaction to occur. Many chemical reactions require heat energy to be applied to reactants to initiate a reaction. active carbon Particles of carbon used widely as an adsorbent to remove H H H H impurities in gases and liquids. addition polymerization A process by which molecules join together by a C C C C series of addition reactions to form larger molecules, or macromolecules, which consist of repeated structural units. n H H H H n addition reaction A reaction in which a molecule of a substance reacts with another molecule to form a single compound. The term addition Addition polymerization reaction is often used in organic chemistry to describe a reaction in which an atom is added to either side of the double or triple bond in an unsaturated compound to form a saturated compound. additive A small quantity of a compound added to a bulk material to give it certain properties. For example, the colorings added to food and reactant reactant drink. adsorption The process by which molecules of gases or liquids become attached to the surface of another substance. Desorption is the opposite process. catalyst aerosol Extremely small liquid or solid particles suspended in air or another gas. Adsorption Ag Symbol for the element silver. agrochemicals Chemicals used in agriculture, with the exception of fertilizers. The classification includes fungicides, herbicides, pesticides, growth regulators, and vitamin and mineral supplements. Other air, a mixture Air is a mixture of several gases (see air, composition of). These Oxygen 21% gases 1% can be physically separated by cooling (to remove water vapor) and by fractional distillation (to remove nitrogen). The properties of air are an average of its components. air, composition of The composition of air varies but its average composition Nitrogen 78% (given in percentages by volume) is nitrogen, 78; oxygen, 21; argon, 0.93; carbon dioxide, 0.03. air, liquid Liquid air is a pale blue liquid that boils at –193°C. As its component parts have different boiling points (nitrogen boils at Composition of air actinium – air, liquid GLOSSARY 9 ▼