Chemistry in Environment

Front

What are the two main gases in the atmosphere?

Back

The two main gases in the atmosphere are nitrogen (about four-fifths) and oxygen (about one-fifth).

Front

What are air pollutants?

Back

Air pollutants are gases present in the atmosphere due to human activities that are not naturally present in significant quantities.

Front

What is a major source of carbon dioxide pollution?

Back

A major source of carbon dioxide pollution is the complete combustion of carbon-containing fuels such as fossil fuels.

Front

True or False?

Carbon monoxide is produced by complete combustion of fossil fuels.

Back

False.

Carbon monoxide is produced by incomplete combustion of carbon-containing fuels.

Front

What are particulates?

Back

Particulates are small particles of carbon (soot) produced by the incomplete combustion of carbon-containing fuels.

Front

State two sources of methane pollution.

Back

Two sources of methane pollution are waste gases from digestive processes of animals and decomposition of vegetation.

Front

How are oxides of nitrogen formed?

Back

Oxides of nitrogen are formed by the reaction of nitrogen with oxygen in the presence of very high temperatures, such as in car engines or during lightning.

Front

What is the main source of sulfur dioxide pollution?

Back

The main source of sulfur dioxide pollution is power stations burning fossil fuels containing sulfur compounds.

Front

What is acid rain?

Back

Acid rain is rainwater that has become acidic due to dissolved pollutants such as oxides of nitrogen and sulfur dioxide.

Front

State the equation for the combustion of sulfur to form sulfur dioxide.

Back

The equation to form sulfur dioxide from sulfur is:

S + O₂ → SO₂