Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 1 - Problems: 1.84

Answer

See explanation below.

Work Step by Step

Plan: A physical change is one in which the physical form of a substance, but not its composition, is altered. A chemical change is one in which a substance is converted into a different substance with different composition and properties. A physical property is a characteristic shown by a substance itself, without interacting with or changing into other substances. A chemical property is a characteristic of a substance that appears as it interacts with, or transforms into, other substances. a)Scene A shows a physical change. The substance changes from a solid to a gas but a new substance is not formed. b)Scene B shows a chemical change. Two diatomic elements form from a diatomic compound. c)Both Scenes A and B result in different physical properties. Physical and chemical changes result in different physical properties. d)Scene B is a chemical change: therefore, it results in different chemical properties. e)Scene A results in a change in state. The substance changes from a solid to a gas.
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