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Chapter 15: Water

Difficulty Level: At Grade Created by: CK-12

NASA/Goddard Space Flight Center/Reto Stöckli. www.flickr.com/photos/gsfc/4426654941/. CC BY 2.0.

Chapter Overview

Water is a very simple substance, but one which is essential to the existence of life as we know it on Earth. Its polarity and hydrogen bonding ability cause water to be able to dissolve many substances and give it unusual properties such as surface tension, low vapor pressure, and a density that is higher than its solid state (ice). Aqueous solutions are encountered frequently in chemistry. Water dissolves most ionic compounds and polar molecular compounds, but cannot dissolve nonpolar molecular compounds. Colloids and suspensions are heterogeneous mixtures rather than true solutions.

Online Resources

See the following Web sites for appropriate activities:

Pacing the Lessons

Lesson Class Period(s) (60 min)
15.1 Properties of Water 1
15.2 Aqueous Solutions 2
15.3 Colloids and Suspensions 1 - 2

Chemistry Concepts

The table below matches each lesson from the flexbook to the chemistry concepts.

Flexbook Lesson Chemistry Concepts
15.1 Properties of Water 15.1 – 15.3
15.2 Aqueous Solutions 15.4 – 15.9
15.3 Colloids and Suspensions 15.10 – 15.11

Chapter Outline

Chapter Summary

Image Attributions


Difficulty Level:

At Grade


Date Created:

Aug 12, 2014

Last Modified:

Oct 20, 2014
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