The presentation by Hamza and Kyra explains the composition and layers of air, defines air pollution, and details various pollutants such as carbon dioxide and nitrogen oxides. It discusses the effects of air pollution, including respiratory diseases and acid rain, and identifies sources of these pollutants, including vehicle emissions and combustion of fuels. Additionally, it outlines how carbon dioxide is formed and mentions resources for further information.

1. IGCSE CHEMISTRY:AIR
A PRESENTATION BY:HAMZA AND KYRA
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2. WHAT IS AIR?
One might ask , what is air? ,We can say that air is the everyday name
for the layer of gas around us. Air consist of various atmosphere they are:
 Troposphere NB: pressure fall with
altitude.
 Stratosphere
 Mesosphere
 Ionosphere
COMPOSITION OF AIR:
Air is made up of various elements , these elements consist of:
 Argon
 Nitrogen
 Oxygen
 Carbon dioxide etc
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3. WHAT IS AIR POLLUTION?
Air pollution is defined as the air contaminated by human activities. We
have so many different pollutants, some of these pollutants include:
 Carbon dioxide(CO2): Colorless, heavy gas, with sharp smell when
concentrated.
 Carbon monoxide(CO): Colorless gas, no smell, and insoluble.
 Particulates: Tiny solid particles ( may appear as dark smoke)
 Nitrogen oxides(NO and NO2): Acidic gases.
EFFECTS OF AIR POLLUTANTS
Air pollutants can cause negative effects on human and their
environment. Some of these effects are:
 They can cause acid rain
 They can cause respiratory disease
 They can cause low visibility
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SOUCRES OF SOME POLLUTANTS
Air pollutants come from many sources some. Some of these sources
include:
CARBON DIOXIDE(CO2)
 Fuels that are burnt such fuels are petroleum, wood and Etc.
CARBON MONXIDES(CO)
 Car engines
PARTICULATES
 Smoke
 Dust
NITROGEN OXIDES(NO2)
 Hot motor engines
 furnances

5. ACID RAIN
WHAT IS ACID RAIN?
Acid rain was first introduced in 1963, a scientist discovered that rain water
at a site was 100 more times acidic than expected.
VIDEO ON ACID RAIN
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CARBON DIOXIDE AND METHANE
Sources of carbon dioxide & methane
There are three main methods by which carbon dioxide is
formed:
• By complete combustion of carbon-based fuel
• In respiration, which occurs in cells and plants of animals
and provides energy for all living processes
• By reaction of carbonates with acids to form a salt,
carbon dioxide and water
• Reaction between acids and carbonates
• Thermal decomposition of a carbonate

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CARBON DIOXIDE AND METHANE

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QUESTIONS ON AIR
 https://pmt.physicsandmathstutor.com/download/Chemistry/
GCSE/Topic-Qs/CIE-IGCSE/11-Air-and-Water/Set-A/Air
%201%20QP.pdf

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END OF
PRESENTATION
FOR FUTHER INFORMATION PLEASE READ YOUR TEXT BOOKS.
~HAMZA & KYRA