《9701_s10_ms_33》.pdf

UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS GCE Advanced Subsidiary Level and GCE Advanced Level MARK SCHEME for the May/June 2010 question paper for the guidance of teachers 9701 CHEMISTRY 9701/33 Paper 31 (Advanced Practical Skills), maximum raw mark 40 This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. It shows the basis on which Examiners were instructed to award marks. It does not indicate the details of the discussions that took place at an Examiners’ meeting before marking began, which would have considered the acceptability of alternative answers. Mark schemes must be read in conjunction with the question papers and the report on the examination. • CIE will not enter into discussions or correspondence in connection with these mark schemes. CIE is publishing the mark schemes for the May/June 2010 question papers for most IGCSE, GCE Advanced Level and Advanced Subsidiary Level syllabuses and some Ordinary Level syllabuses. www.XtremeP Page 2 Mark Scheme: Teachers’ version Syllabus Paper GCE AS/A LEVEL – May/June 2010 9701 33 Question 1 Round all thermometer readings to the nearest 0.5°C. Supervisor’s Report Calculate m/∆T correct to 3 s.f. for each experiment. Candidate’s scripts Calculate m/∆T correct to 3 s.f. for each experiment. Question Sections Indicative material Mark 1 (a) MMO (i) Follows instructions with regard to times and 1 Collection temperature readings 0–3 minutes at 1 minute intervals; 5–8 minutes at ½ minute intervals, and T1 recorde