Chlorofluorocarbons

What are the properties of chlorofluorocarbons (CFCs)?

What were CFCs used in?

What was the problem with using CFCs?

Complete the sentences:
The ozone layer is in a layer of the atmosphere called the ______________. It contains most of the atmosphere's ________ molecules (O₃) and acts as a ___________ sunscreen. It absorbs a lot of the ____ radiation which can cause sunburn or even ________ ___________.

Ozone is formed naturally in what type of reaction?

Describe the formation of ozone from oxygen, giving the symbol equations

Describe the process by which CFCs destroy the ozone layer, including the chemical equations

Give the overall symbol equation for the destruction of ozone

Name another type of compound that destroys ozone, other than CFCs

Nitrogen oxides are produced by...

TRUE OR FALSE:
NO• free radicals affect ozone in the same way as chlorine radicals

CFCs were banned because of the environmental causes. There were, however, a few permitted uses. What were they?

Name three alternatives to CFCs

On average, how many years does it take for CFCs to leave the atmosphere?

Why are HCFCs, HFCs and hydrocarbons only temporary alternatives to CFCs?

TRUE OR FALSE:
HFCs don't affect the ozone layer