2011 May Chemistry Exam
UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education
*6145201818*
CHEMISTRY Paper 3 (Extended) Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, highlighters, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. A copy of the Periodic Table is printed on page 12. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question.
0620/31 May/June 2011 1 hour 15 minutes
For Examiner’s Use 1 2 3 4 5 6 7 8 Total
This document consists of 11 printed pages and 1 blank page.
IB11 06_0620_31/4RP © UCLES 2011
[Turn over
2 1 The following techniques are used to separate mixtures. A simple distillation D chromatography B fractional distillation E filtration C evaporation F diffusion
For Examiner’s Use
From this list, choose the most suitable technique to separate the following. (a) methane from a mixture of the gases, methane and ethane .................. (b) water from aqueous magnesium sulfate .................. (c) glycine from a mixture of the amino acids, glycine and lysine ................... (d) iron filings from a mixture of iron filings and water .................. (e) zinc sulfate crystals from aqueous zinc sulfate .................. (f) hexane from a mixture of the liquids, hexane and octane .................. [1] [1] [1] [1] [1] [1] [Total: 6] 2 Selenium and sulfur are in Group VI. They have similar properties. (a) One of the main uses of selenium is in photoelectric cells. These cells can change light into electrical energy. (i) Name a process which can change light into chemical energy.
*6145201818*
CHEMISTRY Paper 3 (Extended) Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a pencil for any diagrams, graphs or rough working. Do not use staples, paper clips, highlighters, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all questions. A copy of the Periodic Table is printed on page 12. At the end of the examination, fasten all your work securely together. The number of marks is given in brackets [ ] at the end of each question or part question.
0620/31 May/June 2011 1 hour 15 minutes
For Examiner’s Use 1 2 3 4 5 6 7 8 Total
This document consists of 11 printed pages and 1 blank page.
IB11 06_0620_31/4RP © UCLES 2011
[Turn over
2 1 The following techniques are used to separate mixtures. A simple distillation D chromatography B fractional distillation E filtration C evaporation F diffusion
For Examiner’s Use
From this list, choose the most suitable technique to separate the following. (a) methane from a mixture of the gases, methane and ethane .................. (b) water from aqueous magnesium sulfate .................. (c) glycine from a mixture of the amino acids, glycine and lysine ................... (d) iron filings from a mixture of iron filings and water .................. (e) zinc sulfate crystals from aqueous zinc sulfate .................. (f) hexane from a mixture of the liquids, hexane and octane .................. [1] [1] [1] [1] [1] [1] [Total: 6] 2 Selenium and sulfur are in Group VI. They have similar properties. (a) One of the main uses of selenium is in photoelectric cells. These cells can change light into electrical energy. (i) Name a process which can change light into chemical energy.