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 - States of Matter - Page 36: 15

Answer

1. We can say a mixture is homogeneous if the components in it completely mix with each other and its composition is uniform throughout. 2. (f) Here Carbon dioxide is the only pure substance. 3. a and e are homogeneous mixtures.

Work Step by Step

Carbon dioxide is a pure substance because it contains carbon and oxygen in a fixed ratio, i.e , 1:2. Pure substances have fixed composition. If the salt is dissolved completely in water and if we take a drop from any part of it, properties of it will not change. But we can take water and salt in any ratio.Thus it is a homogeneous mixture. Gasoline is a mixture of many compounds, particularly hydrocarbons, though composition is uniform throughout. Rest of the options ( b,c,d and g) are heterogeneous mixtures.
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