Examine the Reasons

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General Certificate of Education January 2006 Advanced Subsidiary Examination CHEMISTRY Unit 3(a) Introduction to Organic Chemistry Wednesday 11 January 2006 9.00 am to 10.00 am CHM3/W

For this paper you must have G a calculator.

For Examiner’s Use Number Mark Number Mark

Time allowed: 1 hour Instructions G Use blue or black ink or ball-point pen. G Fill in the boxes at the top of this page. G Answer all questions. G Answer questions in Section A and Section B in the spaces provided. G All working must be shown. G Do all rough work in this book. Cross through any work you do not want marked. G The Periodic Table/Data Sheet is provided on pages 3 and 4. Detach this perforated sheet at the start of the examination. Information G The maximum mark for this paper is 60. G The marks for questions are shown in brackets. G This paper carries 25 per cent of the total marks for AS. For 1 Advanced Level this paper carries 12 2 per cent of the total marks. G You are expected to use a calculator where appropriate. G The following data may be required. Gas constant R = 8.31 J K–1 mol–1 G Your answers to the question in Section B should be written in continuous prose, where appropriate. G You will be assessed on your ability to use an appropriate form and style of writing, to organise relevant information clearly and coherently, and to use specialist vocabulary, where appropriate. Advice G You are advised to spend about 45 minutes on Section A and about 15 minutes on Section B.

1 2 3 4 5 6

Total (Column 1) → Total (Column 2) → TOTAL

Examiner’s Initials



2 SECTION A Answer all the questions in the spaces provided.


1 The fractions obtained from petroleum contain saturated hydrocarbons that belong to the homologous series of alkanes. (a) Any…...

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