General Chemistry 10th Edition

Published by Cengage Learning
ISBN 10: 1-28505-137-8
ISBN 13: 978-1-28505-137-6

Chapter 1 - Chemistry and Measurement - Exercises: 1.2

Answer

Physical Properties: soft, silver colored, metal Chemical Properties: highly reactive with water, oxygen, and chlorine.

Work Step by Step

Physical Properties: can be observed without changing the composition of the matter. They are used to observe and describe the matter in question. The observations of the Potassium being silver, soft, and a metal do not change the composition of the Potassium, and they are descriptive words. Chemical Properties: A chemical property becomes evident during, or after a chemical change has occurred. As we describe reacting the Potassium with water, oxygen, and chlorine, we are describing a chemical change to the Potassium. Chemical properties cannot be observed while maintaining the original structure of the matter; the matter must undergo a change.
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