General Chemistry: Principles and Modern Applications (10th Edition)

Published by Pearson Prentice Hal
ISBN 10: 0132064529
ISBN 13: 978-0-13206-452-1

Chapter 1 - Matter: Its Properties and Measurement - Exercises - Properties and Classification of Matter - Page 26: 12

Answer

A Physical B Chemical C Physical D Physical

Work Step by Step

A Since the mixture is not chemically bonded, it would only need a physical change. B Since iron is chemically bonded to oxygen in rust, there would need to be a chemical change. C Since seawater is just a solution of substances dissolved in water, there would need to be a physical change. D Since the water is not chemically bonded to the sand, there would need to be a physical change.
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