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This document consists of 10 printed pages. IB17 05_1113_01/4RP © UCLES 2017 [Turn over Cambridge International Examinations Cambridge Secondary 1 Checkpoint SCIENCE 1113/01 Paper 1 April 2017 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. Published 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 Markers were instructed to award marks. It does not indicate the details of the discussions that took place at a Markers’ meeting before marking began, which would have considered the acceptability of alternative answers. Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for Teachers. Cambridge will not enter into discussions about these mark schemes.

1113/01 Checkpoint Secondary 1 Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 2 of 10 Question Answer Marks Further Information 1(a) structure plant cell animal cell nucleus () () cell wall  cytoplasm   cell membrane   vacuole  2all four rows correct = 2 marks two or three rows correct = 1 mark one row correct = 0 marks 1(b) name cytoplasm chloroplast nucleus cell wall C B A letter D function where chemical reactions occur contains genetic information rigid to support the cell where photosynthesis happens 4name and letter linkage three correct links = 2 marks one or two correct = 1 mark letter and function linkage three correct links = 2 marks one or two correct = 1 mark

1113/01 Checkpoint Secondary 1 Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 3 of 10 Question Answer Marks Further Information 2(a) Earth’s structure description core centre of the Earth crust part made of liquid mantle outer part 2all three correct = 2 marks one or two correct = 1 mark 2(b) igneous metamorphic 2each answer = 1 mark either order 2(c) crystal fossil   mineral rock 1if more than one tick = 0 marks

1113/01 Checkpoint Secondary 1 Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 4 of 10 Question Answer Marks Further Information 3 ................................................. ................................................. ................................................. ................................................. ................................................. ................................................. light thermalthermal sound sound kinetic 3six correct = 3 marks four or five correct = 2 marks two or three correct = 1 mark Accept heat for thermal Ignore kinetic with reference to the hand bell Question Answer Marks Further Information 4(a) parallel 1 4(b)(i) ammeter 1 4(b)(ii) current / amps 1Accept rate of flow of charge 4(c) 7.5 (amps) 1Accept any number in the range 7.2 – 7.8 Ignore incorrect units 4(d) 7.5 (amps) / same as A 1 1Accept same as answer in (c) Ignore incorrect units

1113/01 Checkpoint Secondary 1 Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 5 of 10 Question Answer Marks Further Information 5(a) A = lungs B = liver C = small intestine / ileum D = kidney 4each answer = 1 mark Accept duodenum 5(b) how the blood changes as it passes through the organ letter The concentration of nutrients increases. C The concentration of carbon dioxide decreases and the concentration of oxygen increases. A 2Accept correct names small intestine for C lungs for A if name and letter given, mark only letter

1113/01 Checkpoint Secondary 1 Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 6 of 10 Question Answer Marks Further Information 6(a)(i) reactants products water + carbon dioxide  glucose + oxygen 2reactants = 1 mark products = 1 mark Accept carbohydrate / sugar instead of glucose. Ignore starch Accept correct formulae or mix of words and formulae but names take precedence H 2O + CO 2  C6H12O6 + O 2 6(a)(ii) 3 cm 3 1answer must include unit 6(b)(i) more carbon dioxide available (for plant) / breath contains carbon dioxide 1Accept CO 2 6(b)(ii) move the lamp closer / more lamps / brighter bulbs because this provide more light / increases light intensity 2Accept increase temperature = 1 mark Accept because enzymes work faster / more collisions / particles move faster = 1 mark Ignore use more pond weed

1113/01 Checkpoint Secondary 1 Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 7 of 10 Question Answer Marks Further Information 7(a) (type of salt) solution / (different metal salt) solutions 1Ignore different metals 7(b) volume / amount of solution / size of nail / time nail left in / temperature / concentration of solution 1Accept type of nail / amount of iron 7(c) sodium is more reactive than iron / sodium is higher up in the reactivity series 1Accept reverse argument Question Answer Marks Further Information 8 incident rayangle of incidencenormal angle of reflection reflected ray mirror 3six correct = 3 marks four or five correct = 2 marks two or three correct = 1 mark

1113/01 Checkpoint Secondary 1 Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 8 of 10 Question Answer Marks Further Information 9(a) solid 1 9(b) gas liquid solid spread far apart closely packed in a regular pattern closely packed but not in a pattern 1all correct = 1 mark 9(c) any two from particles gain energy / (some) particles have more kinetic energy / (some) particles move faster particles have overcome attraction between them / (idea that) forces between particles have been broken particles have spread further apart (in the gas phase) 2Accept evaporation / water changes to a gas / water changes to water vapour Do not accept water boils Accept particles diffuse into the air Accept (water) molecules instead of particles at least one mark should be associated with particles

1113/01 Checkpoint Secondary 1 Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 9 of 10 Question Answer Mark Further Information 10(a) K 1Accept potassium Accept Fr 10(b) H 1Accept hydrogen 10(c) Cl 1Accept chlorine 10(d) aluminium 1 Ignore Al

1113/01 Checkpoint Secondary 1 Science – Mark Scheme April 2017 PUBLISHED © UCLES 2017 Page 10 of 10 Question Answer Marks Further Information 11(a) any two from eye protection / safety glasses use small(er) masses / use light(er) masses stand away from the table / stand away from the masses / do the experiment on the floor / wear sturdy shoes attach the masses to the wooden block make sure the forcemeter is firmly attached 2 Accept weight rather than mass 11(b) material (forcemeter reading in N) A 2.4 B 1.7 C 3.2 D 0.7 2all figures in the table = 1 mark correct heading for first column = 1 mark materials can be in any order but the numbers must be correct for each material 11(c) repeat the measurements / take more measurements 1Accept (double) check the result Accept use a wider range of masses / use different masses Do not accept use more accurate devices Ignore get more accurate data Ignore use more / different materials