E-Book Overview
Creating clouds in a soda bottle to study weather is among the 30 fascinating experiments found in this engrossing and informative book. Shows readers how to devise and produce challenging science experiments without using complicated and expensive equipment. Once a project is completed, readers are encouraged to investigate further, create additional experiments and develop their own theories and conclusions. For children ages 12 and up.
E-Book Content
Document http://emedia.netlibrary.com/nlreader/nlreader.dll?bookid=26238&filename=cover.html Página 1 de 1 27/09/2003 Document Página 1 de 1 Page i Janice VanCleave's A+ Projects in Chemistry Winning Experiments for Science Fairs and Extra Credit http://emedia.netlibrary.com/nlreader/nlreader.dll?bookid=26238&filename=Page_i.html 27/09/2003 Document Página 1 de 1 Page ii This text is printed on acid-free paper. Copyright © 1993 by John Wiley & Sons, Inc. All rights reserved. Published simultaneously in Canada. Reproduction or translation of any part of this work beyond that permitted by Section 107 or 108 of the 1976 United States Copyright Act without the permission of the copyright owner is unlawful. Requests for permission or further information should be addressed to the Permissions Department, John Wiley & Sons, Inc. The publisher and the author have made every reasonable effort to ensure that the experiments and activities in this book are safe when conducted as instructed but assume no responsibility for any damage caused or sustained while performing the experiments or activities in this book. Parents, guardians, and/or teachers should supervise young readers who undertake the experiments and activities in this book. Library of Congress Cataloging-in-Publication Data Vancleave, Janice Pratt. Janice Vancleave's A+ projects in chemistry: winning experiments for science fairs and extra credit. p. cm. Includes index. Summary: Provides step-by-step instructions for thirty advanced chemistry experiments suitable for science fairs. ISBN 0-471-58631-5—ISBN 0-471-58630-7 (pbk) 1. Chemistry—Experiments—Juvenile literature. [1. Chemistry— Experiments. 2. Experiments. 3. Science projects.] I. Title. II. Title: A+ projects in chemistry. III. Title: Janice Vancleave's A plus projects in chemistry. QD38.V37 1994 540′.78—dc20 93-10588 Printed in the United States of America 10 http://emedia.netlibrary.com/nlreader/nlreader.dll?bookid=26238&filename=Page_ii.html 27/09/2003 Document Página 1 de 1 Page iii It is my pleasure to dedicate this book to a very special friend who has contributed to positive changes in my life, Cullen James Rogers. http://emedia.netlibrary.com/nlreader/nlreader.dll?bookid=26238&filename=Page_iii.html 27/09/2003 Document Página 1 de 2 Page v Contents Introduction 1 1. Weather: Chemically Speaking 7 2. Humidity: Determined Hygroscopically 13 3. Air: Life Supporter and Protector 19 4. Biochemistry: Reactions in Living Things 25 5. Calories: Biochemical Energy 31 6. Fatty Acids: Saturated and Unsaturated 37 7. Vitamin C Content: Analysis of Food by Titration 43 8. Minerals: Chemicals Needed for Life and Good Health 49 9. Proteins: Changed by Denaturing 55 10. Carbohydrates: Mono-, Di-, and Polysaccharides 61 11. Indicators: Identifying Acids and Bases 67 12. Acids and Bases: Their Neutralization 73 13. Phase Changes: Effects of Solutes 79 14. Colloids: Dispersed Particles 85 15. Elect