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Chapter 25

Chemistry and the Real World

Book Version 33
By Boundless
Boundless Chemistry
Chemistry
by Boundless
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Section 1
Outer Layers of the Atmosphere
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Earth's Atmosphere

The Earth's atmosphere is a layer of mixed gases that is trapped near the surface due to gravitational forces.

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Aurora Borealis and the Aurora Australis

Aurora borealis and australis are glowing sky phenomena that occur when charged particles from the sun excite atmospheric molecules.

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Glow of Space Shuttles

The glow observed as a space shuttle re-enters the atmosphere is due to excited NO2 releasing light to return to its ground state.

Section 2
Pollution and Environmental Issues
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Polar Ozone Holes

Chlorofluorocarbons have disrupted stratospheric ozone generation, resulting in a thinning of the ozone layer at the poles.

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Volcanoes

Volcanoes can cause environmental damage due to the hot lava, ash, and gases that are released during an eruption.

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The Greenhouse Effect

The greenhouse effect is an elevation in surface temperatures due to atmospheric gases absorbing and re-radiating thermal energy.

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Photochemical Smog

Photochemical smog forms when primary pollutants react with ultraviolet light to create a variety of toxic and reactive compounds.

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Indoor Pollution: Radon

Radon gas, the result of radium's radioactive decay, can severely compromise indoor air quality.

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Indoor Pollution: CO and CO2

Carbon monoxide and carbon dioxide are products of combustion reactions; in large amounts, carbon monoxide can cause suffocation.

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Indoor Pollution: Formaldehyde

Formaldehyde, the simplest aldehyde, is a common component in building and household materials, and is highly toxic.

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Polymers
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Chemistry and the Real World
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