[PDF] Cambridge Secondary Checkpoint - Science (1113) April 2016 Paper 2 MS.pdf | Plain Text

This document consists of 8 pri nted pages. IB16 05_1113_02/6RP © UCLES 2016 [Turn over Cambridge International Examinations Cambridge Secondary 1 Checkpoint SCIENCE 1113/02 Paper 2 April 2016 MARK SCHEME Maximum Mark: 50 IMPORTANT NOTICE Mark Schemes have been issued on the basis of one copy per Assistant examiner and two copies per Team Leader.

2 © UCLES 2016 1113/02/A/M/16 Question number 1 CSS00431 Part CF Skill Mark Answ er Further Information 8Pl6 A 2 A red B no light Total 2 Question number 2 S_009_051_A Part CF Skill Mark Answ er Further Information (a) (i) 9Bp3 A 1 nectar / bright petals / coloured petals / large petals / scent / pollen (ii) 9Bp3 K 2 pollen from anther gets onto stigma (b) (i) 9Bp3 K 1 Any one from prevent overcrowding less competition (for light, water or nutrients ) (ii) 9Bp3 A 2 method = wind reason = parach ute / hairs / feathery if method is incorrect = 0 marks for the question Total 6

3 © UCLES 2016 1113/02/A/M/16 [Turn over Question number 3 CSS00361 Part CF Skill Mark Answ er Further Information (a) (i) 8Ep6 8Cs1 E 1 go down / decrease (ii) 8Cs1 K 2 move closer together particles slow down / move slower / particles have less energy (b) (i) 8Eo3 8Cs1 E 1 wear eye protection / gloves / don’t hold the apparatus / put the apparatus in a clamp / safety screen / laboratory coat (ii) 8Eo3 8Cs1 E 1 (eye protection) = to prevent (hot ) w ater going into eyes / to prevent glass going in your eyes (gloves / don’t hold the apparatus / put the apparatus in a clamp / laboratory coat ) = to prevent burning / prevent hot water getting to the skin a reason linked to the safety precaution related to the experiment in the question Total 5 Question number 4 CSS00425 Part CF Skill Mark Answ er Further Information (a) 8Ps2 K 1 The pitch of sound is also called its frequency . (b) 8Ps2 A 1 tuna Total 2

4 © UCLES 2016 1113/02/A/M/16 Question number 5 CSS00163 Par t CF Skill Mark Answ er Further Information (a) 7Bc2 A 1 (idea of) water loss (b) 7Bc2 A 2 Any two from from fungi in the air / by the wind from other rotten fruit direct contact (with other rotten fruit) (c) 7Bc2 A 2 Any two from (idea of) fri dge is cold (idea of) limited access (to the fruits) / enclosed / spores unable to gain access no draughts Total 5

5 © UCLES 2016 1113/02/A/M/16 [Turn over Question number 6 CSS00453 Part CF Skill Mark Answ er Further Information (a) 7Cs1 K 2 each correct tick = 1 mark three ticks and two correct = 1 mark three ticks and one correct = 0 marks four or five ticks = 0 marks Liquids have no fixed shape.  Liquids have no fixed volume. Liquid particles only vibrate. The particles in a liquid expand. The particles in a liquid move around.  (b) (i) 7Eo1 7Cs1 E 1 103 (ii) 7Ec1 7Cs1 E 1 increases / goes up Total 4 Question number 7 CSS00575 Part CF Skill Mark Ans wer Further Information (a) 9Pe2 K 1 The main form of thermal (heat) energy transfer in liquids and gases is called convection . (b) 9Pe2 K 1 Thermal (heat) energy is transferred through a solid by conduction . (c) 9Pe2 K 1 Iron is a metal so it is a good conductor . (d) 9Pe2 K 1 insulator Total 4

6 © UCLES 2016 1113/02/A/M/16 Question number 8 CSS00337 Part CF Skill Mark Answ er Further Information (a) 7Ec1 8Bh11 E 1 As the number of cigarettes smoked each day during pregnancy increases, the birth mass of a baby decrea ses . (b) 8Bh11 A 1 give up smoking / reduce the number of cigarettes they smoke each day Total 2 Question number 9 CSS00277 Part CF Skill Mark Answ er Further Information (a) 8Cp2 K 1 Na Do not accept NA / na / na / N A (b) 8Cp1 K 2 Sodium conducts electricity.  Sodium does not conduct heat. Sodium has a low boiling point. Sodium is ductile.  Sodium is not malleable. each correct tick = 1 mark three ticks and two correct = 1 mark three ticks and one correct = 0 marks four or five ticks = 0 marks (c) (i) 9Cc2 K 1 hydrogen (ii) 9Cp3 K 1 faster / greater / bigger / more / quicker Total 5

7 © UCLES 2016 1113/02/A/M/16 [Turn over Question number 10 CSS00444 Part CF Skill Mark Answ er Further Information (a) 7Ep4 7Pf1 E 2 force / newtons mass (b) (i) 7Ep5 7Pf1 E 1 the force needed to move the wooden block will be less (than with rougher surfaces) (ii) 7Ep5 7Pf1 E 1 (smoother surfaces have) less friction Total 4 Question number 11 CSS00372 Part CF Skill Mark Answ er Further Information (a) (i) 9Cc2 K 1 potassium / K sodium / Na calcium / Ca all three in any order = 1 mark case must be correct if symbol written (ii) 9Cc2 K 1 hydrogen (b) 9Cc4 A 2 each correct tick = 1 mark three ticks and two correct = 1 mark three ticks and one correct = 0 marks four or five ticks = 0 marks aluminium and silver nitrate  calcium and zinc sulfate  copper and sodium chloride lead and iron nitrate tin and m agnesium chloride Total 4

8 © UCLES 2016 1113/02/A/M/16 Question number 12 CSS00558 Part CF Skill Mark Answ er Further Information (a) 8Pm1 A 2 they all repel each other (idea that) the north poles are next to north poles / south poles are next to south poles / like poles are next to each other (b) 8Pm1 A 2 they all attract each other (idea that) the north and south poles are next to each other / unlike poles are next to each other Total 4 Question number 13 CSS00418 Part CF Skill Mark Answ er Further I nformation (a) 8Pf1 A 2 10/4 or distance/time 2.5 (in metres per hour ) (b) 8Pf1 A 1 4 (h ours ) Total 3