Ground Level Ozone Flashcards
A layer of ozone protects Earth’s surface from what?
Harmful ultraviolet light.
At ground level, ozone is a what?
Harmful pollutant.
Ozone is an example of a chemical that what?
May not be harmful and may even be beneficial in one situation. But in another situation, it may be a pollutant.
What is the chemical formula for ozone?
O3
Ozone (O3(g)) is a what gas?
Odourless, colourless gas composed of three oxygen atoms.
At ground level, O3 is formed from reactions between what in the presence of what?
Oxygen, nitrogen oxides, and compounds called VOCs, in the presence of heat and sunlight.
Some plants and trees emit these, but most of them come from human-made products such as solvents and gasoline.
Volatile organic compounds (VOCs)
What is a VOC?
Volatile organic compounds.
The major source of ground-level ozone is what?
Fuel combustion in vehicle engines and industry.
As a result, ozone pollution is a problem mainly in where especially when?
Larger cities, especially during the summer.
Motor vehicles are the main source of which major air pollutants?
3 of
NOx(g), CO(g), and O3(g)
