Answer
Physical change
Work Step by Step
When the platinum ring become dull due to physical abrasion, this is a change in physical appearance. Hence, this is a physical change.
Chemistry: A Molecular Approach (3rd Edition)
by Tro, Nivaldo J.
Published by
Prentice Hall
ISBN 10:
0321809246
ISBN 13:
978-0-32180-924-7
Chapter 1 - Sections 1.1-1.8 - Exercises - Problems by Topic - Page 38: 48c
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