Download [PDF] October 2018 CAIE P2 Mark Schemes 1113 Science Cambridge Lower Secondary Checkpoint

File Information

Filename:	[PDF] October 2018 CAIE P2 Mark Schemes 1113 Science Cambridge Lower Secondary Checkpoint.pdf
Filesize:	801.32 KB
Uploaded:	03/08/2021 16:55:05
Keywords:	october 2018 caie p2 mark schemes 1113 science cambridge lower secondary checkpoint pdf
Description:	Download file or read online CAIE Cambridge lower secondary checkpoint past exam paper Science 1113/02/O/N/18 October/November 2018 mark schemes paper 2 - Cambridge Assessment International Education.
Downloads:	118

File Preview

Download Urls

Short Page Link

https://www.edufilestorage.com/2Zh

Full Page Link

https://www.edufilestorage.com/2Zh/PDF_October_2018_CAIE_P2_Mark_Schemes_1113_Science_Cambridge_Lower_Secondary_Checkpoint.pdf

HTML Code

<a href="https://www.edufilestorage.com/2Zh/PDF_October_2018_CAIE_P2_Mark_Schemes_1113_Science_Cambridge_Lower_Secondary_Checkpoint.pdf" target="_blank" title="Download from eduFileStorage.com"><img src="https://www.edufilestorage.com/cache/plugins/filepreviewer/1487/pdf/150x190_middle_46f4e7862b1eb5bd4935adbbba5d79e8.jpg"/></a>

Forum Code

[url=https://www.edufilestorage.com/2Zh/PDF_October_2018_CAIE_P2_Mark_Schemes_1113_Science_Cambridge_Lower_Secondary_Checkpoint.pdf][img]https://www.edufilestorage.com/cache/plugins/filepreviewer/1487/pdf/150x190_middle_46f4e7862b1eb5bd4935adbbba5d79e8.jpg[/img][/url]

[PDF] October 2018 CAIE P2 Mark Schemes 1113 Science Cambridge Lower Secondary Checkpoint.pdf | Plain Text

This document consists of 11 printed pages. IB18 10_1113_02/3RP © UCLES 2018 [Turn over Cambridge International Examinations Cambridge Secondary 1 Checkpoint SCIENCE 1113/02 Paper 2 October 2018 MARK SCHEME Maximum Mark: 50 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 an 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 End of Series Report. Cambridge will not enter into discussions about these mark schemes.

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2018 PUBLISHED ©UCLES 2018 Page 2 of 11 Question Answer Marks Further Information 1 plant cell function absorbs water and minerals from soil transports water and minerals 2 each correct line = 1 mark two lines from a function = 0 marks

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2018 PUBLISHED ©UCLES 2018 Page 3 of 11 Question Answer Marks Further Information 2(a) non- metal type of compound chlorine chloride oxygen oxide sulfur sulfide 2 2(b) water 1 Question Answer Marks Further Information 3 A2 is 0.4 A. A3 is 0.4 A. A4 is 0.8 A. 2 three correct = 2 marks two correct = 1 mark one correct = 0 marks

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2018 PUBLISHED ©UCLES 2018 Page 4 of 11 Question Answer Marks Further Information 4 frog = amphibia(n) valid reason e.g. larval stage / smooth skin / moist skin 2Note second marking point is dependent on correct identification of amphibian(n) Accept reference to young being tadpoles sufficient for larval stage Accept permeable skin / idea of absorbing oxygen through the skin / lays eggs in water / lays unshelled eggs Question Answer Marks Further Information 5(a) any one from different size stars different brightness of stars stars not in the same position 1 Accept the biggest star has moved Accept stars have moved / position of stars / constellations have moved / arrangement of stars is different 5(b) same or similar to the one in January 1

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2018 PUBLISHED ©UCLES 2018 Page 5 of 11 Question Answer Marks Further Information 6(a)(i) photosynthesis 1 6(a)(ii) oxygen 1 6(b) gas A = grown / increased in size gas B = small(er) / dying gas C = (idea of) no change / not grown 3Accept grew very well / tall(er) Accept wilting Accept same size Question Answer Marks Further Information 7(a) 40 (cm 3) 1 7(b) any volume greater than 22 (cm 3) 1 7(c) more particles more collisions 2 Accept less space between particles / more particles in one unit volume / more crowded particles / more particles in the same space / particles closer together / more particles (to) collide / particles more concentrated / more frequent collisions / collisions more often / more chance of collisions = 2 marks

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2018 PUBLISHED ©UCLES 2018 Page 6 of 11 Question Answer Marks Further Information 8 air particles loud speaker letter C touching area where dots are close together letter R touching area where dots are far apart 2

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2018 PUBLISHED ©UCLES 2018 Page 7 of 11 Question Answer Marks Further Information 9(a) (aerobic) respiration 1Accept anaerobic respiration Do not accept breathing 9(b) oxygen 1 9(c) carbon dioxide 1 9(d) any two from air is less dense / few(er) particles / particles further apart so less oxygen (taken in with each breath idea) lower concentration gradient (for gaseous exchange) so gaseous exchange is less efficient / diffusion (of oxygen) is slower 2

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2018 PUBLISHED ©UCLES 2018 Page 8 of 11 Question Answer Marks Further Information 10(a) calcium magnesium zinc iron 1all correct = 1 mark 10(b) magnesium + hydrochloric (acid) magnesium chloride + hydrogen 3both reactants in any order = 1 mark hydrogen as a product = 1 mark magnesium chloride as a product = 1 mark 10(c) stop chemicals getting into eye / avoid injuries to eye from corrosive chemicals / stop reaction (mixture) getting into the eyes 1There must be a reference to the eye and a substance, chemical or reaction Question Answer Marks Further Information 11(a) dispersion 1Ignore refraction 11(b) (red) orange (yellow) green (blue) indigo (violet) 2three correct and in correct order = 2 marks one or two correct and in correct order = 1 mark note these are the only colours allowed

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2018 PUBLISHED ©UCLES 2018 Page 9 of 11 Question Answer Marks Further Information 12(a) compound element magnesium carbonate water (carbon) copper sulfur 2 all correct = 2 marks two or three correct = 1 mark one correct = 0 note if substance is written in both columns then that substance is incorrect 12(b) Mixtures are pure substances. Mixtures can be separated by physical means.  Mixtures only contain elements. Elements in mixtures are joined by chemical bonds. 1more than one tick  = 0 marks 12(c) nitric (acid) 1

1113/02 Checkpoint Secondary 1 Science – Mark Scheme October 2018 PUBLISHED ©UCLES 2018 Page 10 of 11 Question Answer Marks Further Information 13 All the water molecules in the liquid are moving. Some of the molecules have more energy . These molecules move fast / quick / rapid enough to escape the surface of the liquid. This is called evaporation . This makes the liquid become cooler . 4each correct answer = 1 mark Accept heat energy / speed Ignore freely Accept vigorous Accept denser / decrease in volume / gas / (water) vapour Question Answer Marks Further Information 14(a) concentration of carbon dioxide concentration of oxygen high low high low   1both ticks required any incorrect tick = 0 marks 14(b)(i) artery 1 14(b)(ii) (blood is at high) pressure / so it does not rupture 1Accept so blood vessel will not burst / resists the pressure of the blood

©UCLES 2018 Page 11 of 11 Question Answer Marks Further Information 15(a) A B C D E 1 more than one answer = 0 marks 15(b) increasing / going up 1 Accept accelerating / (goes) faster / slow then goes fast Question Answer Marks Further Information 16 force x distance is a moment balance when moments are equal / balance when clockwise moment equals anti-clockwise moment but for 2 marks F 1 x d 1 = F 2 x d 2 2 Accept F 1 x d 1 or F 2 x d 2 answer must refer to moments rather than force or pressure