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Chemistry: 1,001 Practice Problems For Dummies by Richard H. Langley, Heather Hattori

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Chapter 3

Matter and Energy

Chemists deal with matter. Matter occurs in many forms with certain observable properties. One easily observable property of matter is density, which is the mass of a sample of matter divided by its volume. It’s possible to alter matter either physically or chemically. All alterations involve energy.

The Problems You’ll Work On

In this chapter, you work with matter and energy in the following ways:

check.png Describing phases of matter

check.png Classifying matter as substances and mixtures

check.png Understanding properties of matter

check.png Determining density

check.png Calculating energy and temperature

What to Watch Out For

Remember the following when working on matter and energy:

check.png Know the properties of solids, liquids, and gases on microscopic and macroscopic levels.

check.png Remember that a density must have ...

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