Answer
c) An iron bar rusts
Work Step by Step
When an iron bar rusts, the chemical composition changes. In other words, a new iron bar is not chemically composed of the same material as a rusted iron bar.
Chemistry 9th Edition
by Zumdahl, Steven S.; Zumdahl, Susan A.
Published by
Cengage Learning
ISBN 10:
1133611095
ISBN 13:
978-1-13361-109-7
Chapter 1 - Chemical Foundations - ChemWork Problems - Page 40: 108
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