noble gasesOpt

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The Noble Gases 100’s of free ppt’s from www.pptpoint.com library
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Group 18—The Noble Gases The Group18 elements are called the noble gases . Representative Elements 2 This is because they rarely combine with other elements and are found only as uncombined elements in nature. Their reactivity is very low.
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Group 18—The Noble Gases Helium is less dense than air, so it’s great for all kinds of balloons. Representative Elements 2 Helium balloons lift instruments into the upper atmosphere to measure atmospheric conditions.
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Group 18—The Noble Gases Representative Elements 2 Even though hydrogen is lighter than helium, helium is preferred for these purposes because helium will not burn.
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Uses for the Noble Gases The “neon” lights you see in advertising signs can contain any of the noble gases, not just neon. Representative Elements 2 Electricity is passed through the glass tubes that make up the sign.
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Uses for the Noble Gases Representative Elements
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This note was uploaded on 11/09/2011 for the course CHEM 210 taught by Professor Wilson during the Fall '10 term at BYU.

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