The Ozone Layer

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What is the role of the ozone layer?
It absorbs the harmful UV radiation from the sun and so protects organisms on Earth from them.
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Where is ozone found?
In the stratosphere and on the Earth's surface
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The reaction between CFCs and ozone is an example of what kind of reaction?
Free radical substitution
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Why are CFCs harmful to the ozone layer?
CFCs are stable molecules so they are whole when they reach the ozone layer. Once there they react with ozone and in the long term can lead to the depletion of ozone. Harmful radiation from the sun can reach the Earth's surface.
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Which equation demonstrates the reaction beween ozone and a CFCs?
O3 + Cl --> O2 + ClO ClO + O --> Cl + O2
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Why were CFCs initially used?
They are relatively unreactive, non-toxic and have a low flammability
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Other cards in this set

Card 2

Front

Where is ozone found?

Back

In the stratosphere and on the Earth's surface

Card 3

Front

The reaction between CFCs and ozone is an example of what kind of reaction?

Back

Preview of the front of card 3

Card 4

Front

Why are CFCs harmful to the ozone layer?

Back

Preview of the front of card 4

Card 5

Front

Which equation demonstrates the reaction beween ozone and a CFCs?

Back

Preview of the front of card 5
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