Conceptual Physics (12th Edition)

Published by Addison-Wesley
ISBN 10: 0321909100
ISBN 13: 978-0-32190-910-7

Chapter 15 - Think and Explain: 90

Answer

Most substances expand when heated. In a solid, the atoms/molecules are packed tightly and it is generally denser than the liquid. Water is an exception. Ice has open spaces in its crystal structure, is less dense than water, and floats in liquid water.

Work Step by Step

This is discussed on pages 293-295, and shown in Figures 15.20-15.21.
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