Chemistry tuition classes in Miracle Learning Centre is very useful. If you do not understand chemistry, you must definitely attend the chemistry tuition class at Miracle Learning Centre. Let us learn about air and its properties in this chemistry tuition lesson. Your chemistry tuition teacher at Miracle Learning Centre will teach you about air and its properties. Air supports life. Processes such as photosynthesis, combustion and respiration, all require air. Air is a mixture of gases. It is made up of 78% nitrogen, 21% oxygen, 1% noble gases, 0.03% carbon dioxide and water vapour. Since air is a mixture, the composition of air varies from place to place. The amount of water vapour in the air also varies. On a humid day, there is a lot of water vapour in the air, hence, we perspire more easily.

1. Air pollution
Chemistry tuition classes in Miracle Learning Centre is very useful. If you do not understand chemistry, you must
definitely attend the chemistry tuition class at Miracle Learning Centre. Let us learn about air pollution in this
chemistry tuition lesson.
Your chemistry tuition teacher at Miracle Learning Centre will teach you about air pollution. When harmful
substances are being released into the air, air pollution occurs. Natural causes of air pollution include rotting
vegetation which gives out methane and volcanic eruptions which pollute the air with ash, dust and sulfur dioxide.
Sulfur dioxide is a harmful, colourless gas with a displeasing odour. Burning of coal and oil especially in power
stations give off sulfur dioxide. Constant exposure to sulfur dioxide causes breathing difficulties, bronchitis,
pneumonia and even lung cancer.
Chorofluorocarbons(CFCs) are chemicals which are used in aerosol sprays, refrigerators, air-conditioning systems
and foam products. CFCs cause the thinning of the ozone layer in our atmosphere. As the ozone layer gets thinner
and thinner, more and more ultraviolet rays that cause skin cancer and cataracts will reach us.
Carbon Monoxide is a poisonous, colourless and odourless gas. Incomplete combustion of carbon or its related
compounds produces carbon monoxide. Exposure to carbon monoxide causes harmful effects such as headaches,
brain damages or even death within a short period.
Oxides of Nitrogen are poisonous gaseous compounds containing nitrogen and oxygen. These gases are released into
the air from the burning of oil and coal at high temperatures, power stations, industries and exhaust fumes from
motor vehicles. Constant exposure to the oxides of nitrogen damages the lungs.
Miracle Learning Centre hope you have understood the air and its properties and how it helps you to answer
chemistry tuition questions. Do come to Miracle Learning Centre for more chemistry tuition lessons to learn more
about air and its properties and chemistry.