w w ap eP m e tr .X w UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS for the guidance of teachers 0439 CHEMISTRY (US) 0439/13 Paper 1 (Multiple Choice), maximum raw mark 40 Mark schemes must be read in conjunction with the question papers and the report on the examination. • Cambridge will not enter into discussions or correspondence in connection with these mark schemes. Cambridge is publishing the mark schemes for the May/June 2012 question papers for most IGCSE, GCE Advanced Level and Advanced Subsidiary Level syllabuses and some Ordinary Level syllabuses. om .c MARK SCHEME for the May/June 2012 question paper s er International General Certificate of Secondary Education Page 2 Mark Scheme: Teachers’ version IGCSE – May/June 2012 Syllabus 0439 Question Number Key Question Number Key 1 2 3 4 5 C D D B B 21 22 23 24 25 B B C A B 6 7 8 9 10 C D C B B 26 27 28 29 30 C C B D C 11 12 13 14 15 A C C A D 31 32 33 34 35 A A C D C 16 17 18 19 20 C B D A D 36 37 38 39 40 B A A D C © University of Cambridge International Examinations 2012 Paper 13