OZONE

How many oxygen atoms make up the oxygen we breathe?

2

How many oxygen atoms make up ozone?

3

In 1987, the (blank) Protocol banned CFCs from being made or used.

Montreal

3 main ingredients needed to make ground-level ozone

NOx, VOCs, sunlight

Formula for ozone

O3

The ozone in this layer of air protects plants, animals, and us by blocking the (blanks) of the sun.

UV rays

The chemicals that make up CFCs, mainly chlorine and fluorine, would float around the stratosphere (blank blank) ozone molecules.

breaking up

In the late 1920s, chemicals called (blank) or CFCs were invented.

chlorofluorocarbons

NOx is created by

combustion of fossil fuels

VOCs are created by

combustion of fossil fuels & strong scents

Today, spray cans (do or do not) contain CFCs.

do not

The tropospheric ozone is also known as

ground level ozone

Our ground-level ozone problems are caused by

human activities

NOx stands for a group of chemical compounds called

nitrogen oxides

The rays in sunlight cause what two things to react?

nitrogen oxides & VOCs

Does the ozone naturally occur at harmful levels in the troposphere?

no

Were chlorofluorocarbons poisonous, harm fabrics, harm people, or harm plants?

no

Companies used CFCs in appliances like

refrigerators

Ozone Layer is found in the

stratosphere

Ozone layer is also called

stratospheric ozone

Ozone that humans help create is called

tropospheric ozone

Ozone is (blank) and reacts with things, damaging rubber, plants, & even our lungs.

unstable

VOC is made up of hydrogen and carbon & stands for

volatile organic compounds

Did the US sign the agreement?

yes