Topic 11 Air and water
Topic content
The chemical tests for water using cobalt (II) chloride and copper(II) sulfate
The treatment of the water supply by filtering and chlorination
The uses of water in industry and in the home
The composition of clean air as 79% nitrogen, 20% oxygen and the remainder a mixture of noble gases, water vapour and carbon dioxide.
The separation of the oxygen and nitrogen from liquid air by fractional distillation
The common pollutants in air as carbon monoxide, sulfur dioxide, oxides of nitrogen and lead compounds.
The chemical tests for water using cobalt (II) chloride and copper(II) sulfate
The treatment of the water supply by filtering and chlorination
The uses of water in industry and in the home
The composition of clean air as 79% nitrogen, 20% oxygen and the remainder a mixture of noble gases, water vapour and carbon dioxide.
The separation of the oxygen and nitrogen from liquid air by fractional distillation
The common pollutants in air as carbon monoxide, sulfur dioxide, oxides of nitrogen and lead compounds.
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The sources of each of the pollutants:
carbon monoxide from incomplete combustion of carbon containing compounds; sulfur dioxide from the combustion of fossil fuels which contain sulfur compounds (leading to acid rain); oxides of nitrogen from car exhausts.
The explanation of why oxides of nitrogen are in car exhausts and how they are removed by catalysts.
The adverse effect of common pollutants on buildings and health
Methods of rust prevention, paint and other coatings to exclude oxygen
Sacrificial protection of metals in terms of the reactivity series. Galvanising as a method of rust prevention
The need for nitrogen, phosphorous and potassium containing fertilisers.
The essential conditions for the manufacture of ammonia by the Haber process, including the source of the hydrogen (hydrocarbons and steam) and the source of the nitrogen (air).
the displacement of ammonia from its salts
Carbon dioxide and methane are greenhouse gases and may contribute to climate change
The formation of carbon dioxide: from complete combustion of carbon containing substances; as a product of respiration; as a product of the reaction of acid and a carbonate; by the thermal decomposition of carbonates
The carbon cycle showing the link between the processes of combustion, respiration and photosynthesis
The sources of methane including decomposition of vegetation and waste gases from digestion of animals.
carbon monoxide from incomplete combustion of carbon containing compounds; sulfur dioxide from the combustion of fossil fuels which contain sulfur compounds (leading to acid rain); oxides of nitrogen from car exhausts.
The explanation of why oxides of nitrogen are in car exhausts and how they are removed by catalysts.
The adverse effect of common pollutants on buildings and health
Methods of rust prevention, paint and other coatings to exclude oxygen
Sacrificial protection of metals in terms of the reactivity series. Galvanising as a method of rust prevention
The need for nitrogen, phosphorous and potassium containing fertilisers.
The essential conditions for the manufacture of ammonia by the Haber process, including the source of the hydrogen (hydrocarbons and steam) and the source of the nitrogen (air).
the displacement of ammonia from its salts
Carbon dioxide and methane are greenhouse gases and may contribute to climate change
The formation of carbon dioxide: from complete combustion of carbon containing substances; as a product of respiration; as a product of the reaction of acid and a carbonate; by the thermal decomposition of carbonates
The carbon cycle showing the link between the processes of combustion, respiration and photosynthesis
The sources of methane including decomposition of vegetation and waste gases from digestion of animals.
Learning resources:
Purification of water: http://www.absorblearning.com/media/attachment.action?quick=uz&att=2220
Fractional distillation of air:http://www.bbc.co.uk/schools/gcsebitesize/science/edexcel/oneearth/usefulproductsrev2.shtml
Chemicals in air:http://www.bbc.co.uk/schools/gcsebitesize/science/21c/atmosphere/chemicalsairrev1.shtml
Summary of Haber process: http://www.absorblearning.com/media/attachment.action?quick=12a&att=2745
More about the Haber process:http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa/chemreac/energychangesrev3.shtml
Article on Haber Bosch
http://www.theguardian.com/science/2013/nov/03/fritz-haber-fertiliser-ammonia-centenary
Purification of water: http://www.absorblearning.com/media/attachment.action?quick=uz&att=2220
Fractional distillation of air:http://www.bbc.co.uk/schools/gcsebitesize/science/edexcel/oneearth/usefulproductsrev2.shtml
Chemicals in air:http://www.bbc.co.uk/schools/gcsebitesize/science/21c/atmosphere/chemicalsairrev1.shtml
Summary of Haber process: http://www.absorblearning.com/media/attachment.action?quick=12a&att=2745
More about the Haber process:http://www.bbc.co.uk/schools/gcsebitesize/science/add_aqa/chemreac/energychangesrev3.shtml
Article on Haber Bosch
http://www.theguardian.com/science/2013/nov/03/fritz-haber-fertiliser-ammonia-centenary
Keywords: Topic 11 air and water
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