Chemistry 10th Edition

Published by Brooks/Cole Publishing Co.
ISBN 10: 1133610668
ISBN 13: 978-1-13361-066-3

Chapter 1 - The Foundations of Chemistry - Exercises - Chemical and Physical Properties - Page 37: 24


(c), (e), and (f).

Work Step by Step

(a) Sugar does not change in composition when dissolves in water. (Physical) (b) Boiling point is a physical property. (c) Changes in composition (From $O_3$ to $O_2$). (Chemical) (d) Density is a physical property. (e) When sodium metal reacts with water, the following reaction happens: $$Na_{(s)} + H_2O_{(l)} \longrightarrow NaOH_{(aq)} + \frac 12{H_{2}}_{(g)}$$ Therefore, there is a composition change. (Chemical) (f) Combustion consists of a reaction with changes in compositions. (Chemical) (g) Melting point is a physical property.
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