Cambridge IGCSE Science - Combined 0653 — 2021 Oct/Nov Paper 1 · Variant 3

This document has 20 pages. Any blank pages are indicated. IB21 11_0653_13/RP © UCLES 2021 [Turn over *0742271201* Cambridge IGCSE™ COMBINED SCIENCE 0653/13 Paper 1 Multiple Choice (Core) October/November 2021 45 minutes You must answer on the multiple choice answer sheet. You will need: Multiple choice answer sheet Soft clean eraser Soft pencil (type B or HB is recommended) INSTRUCTIONS  There are forty questions on this paper. Answer all questions.  For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the multiple choice answer sheet.  Follow the instructions on the multiple choice answer sheet.  Write in soft pencil.  Write your name, centre number and candidate number on the multiple choice answer sheet in the spaces provided unless this has been done for you.  Do not use correction fluid.  Do not write on any bar codes.  You may use a calculator. INFORMATION  The total mark for this paper is 40.  Each correct answer will score one mark.  Any rough working should be done on this question paper.  The Periodic Table is printed in the question paper.

2 © UCLES 2021 0653/13/O/N/21 1 Movement is a characteristic of all living organisms. Which two other characteristics of living organisms provide the energy for movement? A excretion and nutrition B growth and sensitivity C nutrition and respiration D respiration and growth 2 Which statement about diffusion is correct? A It only happens through a partially permeable membrane. B It only involves water molecules. C It only occurs between living cells. D It only occurs down a concentration gradient. 3 A biological molecule is analysed and found to contain carbon, oxygen, hydrogen and nitrogen. What is this biological molecule? A fat B glucose C protein D starch

3 © UCLES 2021 0653/13/O/N/21 [Turn over 4 Which graph shows the effect of temperature on the activity of an enzyme from a human? 0 10 20 30 A 40 50 60 rate of reaction temperature /
C 0 10 20 30 B 40 50 60 rate of reaction temperature /
C 0 10 20 30 C 40 50 60 rate of reaction temperature /
C 0 10 20 30 D 40 50 60 rate of reaction temperature /
C 5 Which substance found in plant cells is needed for photosynthesis? A chlorophyll B glucose C haemoglobin D starch 6 Four nutrients are listed. 1 calcium 2 fat 3 fibre 4 iron Milk and cheese are both good sources of two of these nutrients. Which two nutrients? A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

4 © UCLES 2021 0653/13/O/N/21 7 What happens during digestion? large pieces of food are broken down into small pieces large molecules are broken down into small molecules A   B   C   D   8 Which vessel does oxygenated blood enter the heart through? A aorta B pulmonary artery C pulmonary vein D vena cava

5 © UCLES 2021 0653/13/O/N/21 [Turn over 9 The graph shows the rate and depth of breathing of a student at rest. volume of air in the lungs time / s 15 0 Which graph shows the rate and depth of breathing of the student immediately after five minutes of physical activity? volume of air in the lungs time / s A 15 volume of air in the lungs time / s B 15 volume of air in the lungs time / s C 15 volume of air in the lungs time / s D 15 0 0 0 0

6 © UCLES 2021 0653/13/O/N/21 10 A student sets up an experiment to test the effect of phototropism on a seedling. The student places the seedling in a box and only allows light through a small gap, as shown. box seedling plant pot light Which diagram shows the expected result of the experiment after two days? A B C D 11 Which row is correct for sexual reproduction? gametes are formed offspring genetically identical to parents A no no B yes no C no yes D yes yes 12 The diagram represents four organisms in a food chain. T  U  V  W Which organisms are consumers? A T, U and V B T, U and W C T, V and W D U, V and W

7 © UCLES 2021 0653/13/O/N/21 [Turn over 13 The diagram shows part of the carbon cycle. Which stage in the cycle produces oxygen? carbon dioxide in the air carbon compounds in fuels carbohydrates, fats and proteins in animals carbohydrates, fats and proteins in dead matter carbohydrates and proteins in green plants D C B A decomposition death death 14 Which diagram shows a gas made up of molecules? A B C D 15 Which piece of apparatus is used to measure exactly 12.6 cm3 of dilute hydrochloric acid? 50 cm3 50 cm3 50 cm3 25 cm3 A B C D

8 © UCLES 2021 0653/13/O/N/21 16 Which process is not a chemical change? A electrolysis of molten lead bromide B fractional distillation of petroleum C oxidation of copper D rusting of iron 17 The diagrams represent the particles in substances X, Y and Z. X Y Z Which row identifies the element, the compound and the mixture? element compound mixture A X Y Z B X Z Y C Y X Z D Z Y X 18 The equation for the complete combustion of propane, C3H8, is shown. C3H8 + xO2  3CO2 + yH2O What are x and y? x y A 3 4 B 3 8 C 5 4 D 5 8

9 © UCLES 2021 0653/13/O/N/21 [Turn over 19 The electrolysis of dilute sulfuric acid is shown. inert electrodes dilute sulfuric acid Which statement about this process is correct? A Hydrogen is formed at the positive electrode. B Oxygen is formed at the cathode. C The inert electrodes are made from iron. D More hydrogen is formed than oxygen. 20 The initial temperature of a sample of water is measured. Ammonium nitrate is mixed with the water. The final temperature is measured. The diagram shows the thermometer readings. 19 18 21 20 initial temperature final temperature Which row shows the initial temperature, the final temperature and the type of reaction that occurs? initial temperature / C final temperature / C type of reaction A 20.4 18.7 exothermic B 21.6 19.3 exothermic C 20.4 18.7 endothermic D 21.6 19.3 endothermic

10 © UCLES 2021 0653/13/O/N/21 21 Hydrogen peroxide decomposes to form water and oxygen. Which changes in temperature and in concentration both reduce the rate of this reaction? temperature of hydrogen peroxide concentration of hydrogen peroxide A decrease decrease B decrease increase C increase decrease D increase increase 22 Ammonia dissolves in water. Which test shows that the solution has a pH of 9? A Blue litmus paper stays blue. B Red litmus paper turns blue. C Universal indicator paper turns green. D Universal indicator paper turns blue. 23 A piece of damp blue litmus paper is placed in a gas. The litmus paper turns red and then turns white. What is the gas? A carbon dioxide B chlorine C hydrogen D oxygen 24 Which statement about transition elements is not correct? A They can act as catalysts. B They can be metals or non-metals. C They have high densities. D They have high melting points.

11 © UCLES 2021 0653/13/O/N/21 [Turn over 25 Brass is an alloy. What is brass? A a compound containing two metallic elements B a compound containing two non-metallic elements C a mixture containing two metallic elements D a mixture containing two non-metallic elements 26 Magnesium carbonate reacts with dilute hydrochloric acid. Calcium carbonate decomposes when heated. Which gas is produced in both reactions? A carbon dioxide B carbon monoxide C chlorine D hydrogen 27 Substance X contains only single bonds. Substance X burns in oxygen to form carbon dioxide and water. What is substance X? A ethene B methane C carbon D propene

12 © UCLES 2021 0653/13/O/N/21 28 Which distance–time graph represents an object moving with decreasing speed? distance time D distance time 0 0 C distance time B distance time A 0 0 0 0 0 0 29 What is the unit for force and what is the unit for weight? force weight A kg kg B kg N C N kg D N N

13 © UCLES 2021 0653/13/O/N/21 [Turn over 30 An empty measuring cylinder has a mass of 65 g. A liquid is poured into the cylinder to the level shown. 100 90 80 70 60 50 40 30 20 10 70 60 50 measuring cylinder liquid cm3 The mass of the measuring cylinder and liquid is now 120 g. What is the density of the liquid? A 0.89 g / cm3 B 0.95 g / cm3 C 1.1 g / cm3 D 2.1 g / cm3 31 Which two quantities are needed to calculate the work done by a force on an object? A the size of the force and the acceleration of the object B the size of the force and the distance travelled by the object in the direction of the force C the size of the force and the mass of the object D the size of the force and the time for which the force acts 32 What is the source of energy for a geothermal power station? A heat from hot rocks in the Earth B heat from sunlight striking the Earth C heat produced by burning fossil fuels that are found in the Earth D heat produced by friction as air moves over the surface of the Earth 33 Which statements about liquids and gases are correct? 1 Molecules in gases are further apart than molecules in liquids. 2 Molecules in liquids and gases are arranged randomly. 3 When a liquid evaporates, the temperature of the remaining liquid decreases. A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3

14 © UCLES 2021 0653/13/O/N/21 34 What is the method of thermal energy transfer in a solid metal bar? A conduction B convection C evaporation D radiation 35 A ray of light passes through a glass window. Which path does it take? A B C D glass air air ray of light 36 Elephants can hear sounds with frequencies between 10 Hz and 12 kHz. Which frequency of sound can be heard by both elephants and humans with healthy ears? A 10 Hz B 15 Hz C 1500 Hz D 15 000 Hz 37 Two charged objects 1 and 2 are close to each other. Which row describes the force between the objects for the charges shown? charge on object 1 charge on object 2 force A negative negative attraction B negative positive no force C positive negative attraction D positive positive no force

15 © UCLES 2021 0653/13/O/N/21 [Turn over 38 A circuit contains a battery connected to a resistor. Which values of electromotive force (e.m.f.) and resistance produce the smallest current in the circuit? e.m.f. / V resistance /  A 6.0 10 B 6.0 20 C 24 80 D 24 160 39 The diagrams show four circuits, each containing an ammeter and two lamps with different resistances. Which circuit shows an ammeter with a reading equal to the current in each lamp? A A A B A C D A

16 © UCLES 2021 0653/13/O/N/21 40 The diagram shows a circuit with four labelled components. One component breaks the circuit automatically when the current becomes too large. Which component does this? A C B D

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20 © UCLES 2021 0653/13/O/N/21 Group The Periodic Table of Elements 1 H hydrogen 1 2 He helium 4 I II III IV V VI VII VIII 3 Li lithium 7 4 Be beryllium 9 atomic number atomic symbol Key name relative atomic mass 11 Na sodium 23 12 Mg magnesium 24 19 K potassium 39 20 Ca calcium 40 37 Rb rubidium 85 38 Sr strontium 88 55 Cs caesium 133 56 Ba barium 137 87 Fr francium – 88 Ra radium – 5 B boron 11 13 Al aluminium 27 31 Ga gallium 70 49 In indium 115 81 Tl thallium 204 6 C carbon 12 14 Si silicon 28 32 Ge germanium 73 50 Sn tin 119 82 Pb lead 207 22 Ti titanium 48 40 Zr zirconium 91 72 Hf hafnium 178 104 Rf rutherfordium – 23 V vanadium 51 41 Nb niobium 93 73 Ta tantalum 181 105 Db dubnium – 24 Cr chromium 52 42 Mo molybdenum 96 74 W tungsten 184 106 Sg seaborgium – 25 Mn manganese 55 43 Tc technetium – 75 Re rhenium 186 107 Bh bohrium – 26 Fe iron 56 44 Ru ruthenium 101 76 Os osmium 190 108 Hs hassium – 27 Co cobalt 59 45 Rh rhodium 103 77 Ir iridium 192 109 Mt meitnerium – 28 Ni nickel 59 46 Pd palladium 106 78 Pt platinum 195 110 Ds darmstadtium – 29 Cu copper 64 47 Ag silver 108 79 Au gold 197 111 Rg roentgenium – 30 Zn zinc 65 48 Cd cadmium 112 80 Hg mercury 201 112 Cn copernicium – 114 Fl flerovium – 116 Lv livermorium – 7 N nitrogen 14 15 P phosphorus 31 33 As arsenic 75 51 Sb antimony 122 83 Bi bismuth 209 8 O oxygen 16 16 S sulfur 32 34 Se selenium 79 52 Te tellurium 128 84 Po polonium – 9 F fluorine 19 17 Cl chlorine 35.5 35 Br bromine 80 53 I iodine 127 85 At astatine – 10 Ne neon 20 18 Ar argon 40 36 Kr krypton 84 54 Xe xenon 131 86 Rn radon – 21 Sc scandium 45 39 Y yttrium 89 57–71 lanthanoids 89–103 actinoids 57 La lanthanum 139 89 Ac lanthanoids actinoids The volume of one mole of any gas is 24 dm3 at room temperature and pressure (r.t.p.). actinium – 58 Ce cerium 140 90 Th thorium 232 59 Pr praseodymium 141 91 Pa protactinium 231 60 Nd neodymium 144 92 U uranium 238 61 Pm promethium – 93 Np neptunium – 62 Sm samarium 150 94 Pu plutonium – 63 Eu europium 152 95 Am americium – 64 Gd gadolinium 157 96 Cm curium – 65 Tb terbium 159 97 Bk berkelium – 66 Dy dysprosium 163 98 Cf californium – 67 Ho holmium 165 99 Es einsteinium – 68 Er erbium 167 100 Fm fermium – 69 Tm thulium 169 101 Md mendelevium – 70 Yb ytterbium 173 102 No nobelium – 71 Lu lutetium 175 103 Lr lawrencium –

This document consists of 3 printed pages. © UCLES 2021 [Turn over Cambridge IGCSE™ COMBINED SCIENCE 0653/13 Paper 1 Multiple Choice (Core) October/November 2021 MARK SCHEME Maximum Mark: 40 Published This mark scheme is published as an aid to teachers and candidates, to indicate the requirements of the examination. Mark schemes should be read in conjunction with the question paper and the Principal Examiner Report for Teachers. Cambridge International will not enter into discussions about these mark schemes. Cambridge International is publishing the mark schemes for the October/November 2021 series for most Cambridge IGCSE™, Cambridge International A and AS Level components and some Cambridge O Level components.

0653/13 Cambridge IGCSE – Mark Scheme PUBLISHED October/November 2021 © UCLES 2021 Page 2 of 3 Question Answer Marks 1 C 1 2 D 1 3 C 1 4 A 1 5 A 1 6 A 1 7 A 1 8 C 1 9 D 1 10 A 1 11 B 1 12 D 1 13 B 1 14 C 1 15 A 1 16 B 1 17 D 1 18 C 1 19 D 1 20 C 1 21 A 1 22 D 1 23 B 1 24 B 1 25 C 1 26 A 1 27 B 1 28 A 1

0653/13 Cambridge IGCSE – Mark Scheme PUBLISHED October/November 2021 © UCLES 2021 Page 3 of 3 Question Answer Marks 29 D 1 30 B 1 31 B 1 32 A 1 33 D 1 34 A 1 35 C 1 36 C 1 37 C 1 38 D 1 39 A 1 40 B 1