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The reading selections in Properties of Matter contain embedded definitions and links to related information on other Web sites. If the same word is linked more than once, it may be that one link is to a definition and another is to an outside site. Please mouse-over illustrations and photographs to see if they are hyperlinked—the familiar "pointing hand" symbol will pop up if the image is linked.

The "Test Your Understanding" section is there to help you. The short quizzes will help you understand where you need more work. If you miss questions, try re-reading that selection and try its quiz again. Let your teacher know if you have problems or questions. Discuss the reading selections and their Web links with your teacher and classmates. You may reach the "Test Your Understanding" section from the left hand navigation on the home page, but you will also be prompted to take a section quiz after you finish the readings in that section.

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