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Knows that atoms interact with one another by transferring or sharing electrons that are furthest from the nucleus; these outer electrons govern the chemical properties of the element.

Color and Spectrum

Human beings' color vision allows us to distinguish both large and subtle differences between objects of similar color. Consider a forest, with its multitude of greens. But objects with similar colors are not necessarily the same, as the jade and seaweed found on some Pacific coast beaches illustrate. Researchers, chemists, criminalists, and many other investigators study and compare objects and learn about their compositions by breaking the light down into its composite colors, a technique called spectroscopy

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