by Jennifer Boothroyd a Lerner Publications Company · Minneapolis by Jennifer Boothroyd Solid? W h a t I s a All things are made of matter. 2 Matter is anything that takes up space. 3 4 There are three kinds of matter. 5 A solid is a kind of matter. 6 A solid has its own shape. 7 Most solids do not take the shape of their containers. 8 A rock is a solid. Solids can be hard. 9 A toy is a solid. Solids can be soft. [...].. .A tree is a solid Solids can be thick 10 A ribbon is a solid Solids can be thin 11 Cutting a solid changes its size 12 But it is still a solid 13 Heating a solid can change its shape 14 Heat can change a solid into a liquid 15 Heat can melt wax 16 Look around What solids do you see? 17 Dissolving Some solids dissolve in water When a solid dissolves in a liquid, it looks like the solid has disappeared... tea bag is empty The drink mix has dissolved in the water The cup now holds a drink mix solution 19 Solid Facts Some solids, like wood and wax, float in water Other solids, like most rocks and metal, sink A diamond is the hardest natural solid People make jewelry with diamonds The softest natural solid is graphite It is the lead in pencils Some solids, like dry ice, can change directly into a gas... 20 Solids like dough and soil can take the shape of their containers These solids need to be squished to change their shapes To make a chocolate candy bar, solid chocolate is melted Then the liquid chocolate is poured into a container called a mold The chocolate cools and becomes solid again The solid chocolate keeps its new shape when it is taken out of the mold 21 Glossary liquid – something that... disappeared Actually, the solid has broken into very tiny pieces and mixed with the liquid This new liquid is called a solution The experiment on the next page is an easy way to see dissolving in action 18 Fill an empty tea bag with red drink mix Fill a clear glass with water Put the tea bag in the water Do not let it touch the bottom of the glass Look closely at the liquid under the tea bag Can you see any... Photodisc/Photodisc Green/ Getty Images, pp 16, 22 (second from bottom); USDA Photo, p 17 Illustration on page 19 by Laura Westlund/Independent Picture Service Lerner Publications Company A division of Lerner Publishing Group 241 First Avenue North Minneapolis, MN 55401 U.S .A Website address: www.lernerbooks.com Library of Congress Cataloging-in-Publication Data Boothroyd, Jennifer, 1972– What is a solid? / by Jennifer... flows matter – anything that takes up space melt – to change from a solid to a liquid solid – something that has a definite shape 22 Index changes – 12, 14, 15, 20, 21 cutting – 12 dissolving – 18, 19 gas – 20 heating – 14–16 liquid – 15, 18, 19, 20, 21 matter – 2–5 melting – 16, 21 23 Copyright © 2007 by Lerner Publications Company All rights reserved International copyright secured No part of this book... 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 written permission of Lerner Publishing Group, except for the inclusion of brief quotations in an acknowledged review The photographs in this book are used with the permission of: © Erica Johnson/Independent... Boothroyd p cm — (First step nonfiction) Includes index ISBN-13: 978–0–8225–6836–0 (lib bdg : alk paper) ISBN-10: 0–8225–6836–5 (lib bdg : alk paper) 1 Solids—Juvenile literature 2 Solid state physics—Juvenile literature I Title II Series QC176.3.B66 2007 530.4'1—dc22 2006006307 Manufactured in the United States of America 1 2 3 4 5 6 – DP – 12 11 10 09 08 07 eISBN-13: 978-0-8225-8951-8 ... Royalty-Free/CORBIS, pp 2, 6, 10, 22 (second from top); PhotoDisc Royalty Free by Getty Images, pp 3, 4 (right); © Todd Strand/Independent Picture Service, pp 4 (top), 5, 11, 12, 13, 22 (bottom); © Ryan McVay/Photodisc Green/Getty Images, p 4 (bottom); © Brendan Curran/Independent Picture Service, p 8; © Purestock/ SuperStock, p 9; © age fotostock/SuperStock, pp 15, 22 (top); © Photodisc/Photodisc . matter. 5 A solid is a kind of matter. 6 A solid has its own shape. 7 Most solids do not take the shape of their containers. 8 A rock is a solid. Solids can be hard. 9 A toy is a solid. Solids can be soft. 10 A. be soft. 10 A tree is a solid. Solids can be thick. 11 A ribbon is a solid. Solids can be thin. 12 Cutting a solid changes its size. 13 But it is still a solid. 14 Heating a solid can change its shape. 15 Heat. shape. 15 Heat can change a solid into a liquid. 16 Heat can melt wax. 17 Look around. What solids do you see? 18 Dissolving Some solids dissolve in water. When a solid dissolves in a liquid, it