The document contains a syllabus for a chemistry class covering topics about air and water composition, purification, and pollution. It includes 15 chemistry worksheets from 2002 to 2004 covering these topics, with questions about chemical tests, filtration, chlorination, gas composition, combustion reactions, and more. The worksheets provide examples, diagrams, and multiple choice questions to assess understanding of the key concepts covered in the syllabus.

1. Teacher-Mr KETAN WADHER
Student name: Subject: Chemistry
Topic: Air & Water (ORGANIC CHEMISTRY) Date of Submission:
06/09/2012
Syllabus
-describe a chemical test for water
-describe, in outline, the purification of the water supply in terms of filtration and chlorination
-name some of the uses of water in industry and in the home
-describe the composition of clean air as being approximately 79% nitrogen, 20% oxygen and the remainder as being
a mixture of noble gases, water vapour and carbon dioxide
-name the common pollutants in the air as being carbon monoxide, sulphur dioxide, oxides of nitrogen and lead
compounds
-state the source of each of these pollutants:
-carbon monoxide from the incomplete combustion of carbon-containing substances
-sulphur dioxide from the combustion of fossil fuels which contain sulphur compounds (leading to 'acid rain')
-oxides of nitrogen and lead compounds from car exhausts
-state the adverse effect of common pollutants on buildings and on health
-name the uses of oxygen in oxygen tents in hospitals, and with acetylene (a hydrocarbon), in welding
-describe methods of rust prevention: paint and other coatings to exclude oxygen;
-describe the need for nitrogen- phosphorous- and potassium-containing fertilisers
-describe the displacement of ammonia from its salts
-describe the formation of carbon dioxide: as a product of complete combustion of carbon-containing substances as a
product of respiration as a product of the reaction between an acid and a carbonate
-describe and explain the presence of oxides of nitrogen in car exhausts and their catalytic removal
-describe the separation of oxygen and nitrogen from liquid air by fractional distillation
-describe sacrificial protection in terms of the reactivity series of metals & galvanising as method of rust prevention
-describe the essential conditions for the manufacture of ammonia by the Haber process including the sources of the
hydrogen and nitrogen, i.e. hydrocarbons or steam and air.
1] June2002
2] June 2002
WORKSHEET SUBJECT: CHEMISTRY BATCH: IGCSE Page 1/12

2. 3] The pie-chart shows the composition of air. June 2003
4] June 2004
5] Gas is released in all of the examples below. June 2004
WORKSHEET SUBJECT: CHEMISTRY BATCH: IGCSE Page 2/12

3. Which gas do they all produce?
A carbon dioxide
B hydrogen
C methane
D oxygen
6] The diagram shows how water is purified. At which stage are bacteria in the water killed? Nov 2003
7] Which compound in polluted air can damage stonework and kill trees? Nov 2003
A carbon dioxide
B carbon monoxide
C lead compounds
D sulphur dioxide
8] The apparatus shown is set up and left for a week. Nov 2003
Where would the water level be at the end of the week?
WORKSHEET SUBJECT: CHEMISTRY BATCH: IGCSE Page 3/12

4. 9] Buildings made of calcium carbonate can react with ‘acid rain’. June 2002
Which gas is formed as a result of this?
A carbon dioxide
B carbon monoxide
C nitrogen dioxide
D sulphur dioxide
10] June 2003
11] June 2004
12] Which of the following does not need a supply of oxygen in use? June 2002
A breathing apparatus in hospitals
B a fire extinguisher
C an acetylene welding torch
D a petrol engine
13] Which compound in polluted air can damage stonework and kill trees? Nov 2003
14] June 2003
WORKSHEET SUBJECT: CHEMISTRY BATCH: IGCSE Page 4/12

5. 15] Which methods can be used to prevent the rusting of an iron girder of a bridge? June 2003
16] June 2004
17] Nov 2004 Paper 2
1] 2 of the stages in water purification are filtration and chlorination. June 04 the diagram below shows a filter tank.
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6. 2] Nov 2002
3] Nov 2003
The diagram below shows a modern landfill site for the disposal of waste materials.
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7. The waste materials are broken down naturally in several stages.
4] Nov 2003
WORKSHEET SUBJECT: CHEMISTRY BATCH: IGCSE Page 7/12

8. WORKSHEET SUBJECT: CHEMISTRY BATCH: IGCSE Page 8/12

9. 5] Nov 2001
6] Nov 2004
WORKSHEET SUBJECT: CHEMISTRY BATCH: IGCSE Page 9/12

10. 7] Nov 2004
Paper 3
1] Nov 2003
2] Nov 2004
WORKSHEET SUBJECT: CHEMISTRY BATCH: IGCSE Page 10/12

11. Question Bank
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