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Explores the connection between the atomic structure of an element and its properties. Students see how the behavior of the elements and the compounds they form is related to their valence shells -- and learn that anything that affects the valence shell will affect the chemical and physical properties of the element! Viewers learn how to identify trends in properties based on location of an element on the periodic table. Includes a look at some of the many patterns found in periods and groups of elements that combine to create the world around us. Features information about a printable "Guide to the Elements" that can be used for students.