Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 1 - Introduction: Matter and Measurement - Additional Exercises - Page 37: 1.62a

Answer

Liquid to gas (vaporization).

Work Step by Step

Ethyl chloride is poured onto skin as a liquid. Body heat is absorbed by the substance causing it to boil off, changing from liquid to gas. The heat absorbed is carried away by the gas, creating a cooling sensation on the skin.
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