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Your e-mail Input it if you want to receive answer. Rate us 1. Cancel Send. The effect of adding bromine to the two substances was quite well , the first part of the question, the reaction of bromine and the iodide ion in potassium iodide causedmajor problems. Very few candidates tackled the question in terms of electron exchange, which limited thecredit they could gain.
Even then, few candidates really said anything which showed an understanding ofthe 6 This was a deceptively difficult question, and few candidates scored full marks. The reading of 35 was generally done correctly, although some read it The explanation of the narrow capillary tube - in terms of improving sensitivity, not accuracy - wasdone very poorly.
However, many candidates gave a good description of the cooling and contracting of 7 Knowledge and understanding of the Kinetic Theory of Matter is notoriously poor. Molecules do not think,therefore they cannot want to do anything.
In part a , the energy is required to move the molecules apartand give them more potential energy. They do not increase their kinetic energy further whilst the substanceis at melting point the temperature remains constant! The ink spreads out because of the randommovement of both ink and water molecules; to give an answer naming the term diffusion does not answer thequestion that was 8 Carelessness in drawing the direction of the waves in the shallow water cost many candidates credit.
However, marks werelost in part c because candidates did not give a full 10It was pleasing that a large number of candidates recognised that there must be movement for work to bedone. However, fewer linked the movement to the applied force. The calculation of weight was quite welldone and most candidates recognised the box would fall with acceleration, if not constant acceleration, andonce again many candidates continue to write, -accelerating with constant speed.
Question 11 Too few candidates explained oxidation in terms of exchange of electrons; also, many failed to link it to theexample given. They show the basis on which Examiners were initially instructed to award marks. They do not indicate the details of the discussions that Studies , Pakistan , Pakistan studies.
Biology , , Biology , biology What is represented by the shaded area under the graph? Advanced , , Advanced gce a2 advanced. This document consists of 14 printed pages and 2 blank pages. International , Examination , Cambridge , Cambridge international examinations cambridge. Cambridge Assessment is the brand name of University of. International , University , Cambridge , University of cambridge international. General , Education , Certificate , General certificate of education. Answer the questions under Part-A on a separate answer booklet.
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