Air (c) Preview Page

Learning Outcomes 

Students should be able to:


(a) describe the volume composition of gases present in dry air as being approximately 78% nitrogen, 21% oxygen and the remainder being noble gases (with argon as the main constituent) and carbon dioxide 

(b) name some common atmospheric pollutants, e.g. carbon monoxide; methane; nitrogen oxides (NO and NO2); ozone; sulfur dioxide; unburned hydrocarbons 

(c) state the sources of these pollutants as: 

(i) carbon monoxide from incomplete combustion of carbon-containing substances 

(ii) nitrogen oxides from lightning activity and internal combustion engines 

(iii) sulfur dioxide from volcanoes and combustion of fossil fuels 

(d) discuss some of the effects of these pollutants on health and on the environment: 

(i) the poisonous nature of carbon monoxide 

(ii) the role of nitrogen dioxide and sulfur dioxide in the formation of ‘acid rain’ and its effects on respiration and buildings 


Sample Worksheet 

Air sample worksheet