Cambridge IGCSE Sciences - Co-ordinated (Double) 0654 — 2017 Oct/Nov Paper 1 · Variant 3
0654/13/O/N/17 · 40 questions · 40 marks · ≈45 min
The question paper and its mark scheme, free to read here and free to download. This is Cambridge’s own paper, exactly as it was sat.
Question paper16 pages
Mark scheme3 pages
Answers below. Sit the paper first if you are practising.
Questions as text
Q1 · What type of substances are enzymes?
1 What type of substances are enzymes? A carbohydrates B fats C lipids D proteins
Mark scheme: D
Q2 · What are the raw materials and products of photosynthesis?
2 What are the raw materials and products of photosynthesis? raw materials products A carbon dioxide + sugar oxygen + water B carbon dioxide + water oxygen + sugar C oxygen + sugar carbon dioxide + water D oxygen + water carbon dioxide + sugar
Mark scheme: B
Question 3
3 What is homeostasis? A the maintenance of the body’s external environment B the maintenance of the body’s internal environment C the processes that produce heat in the body D the removal of wastes from the body
Mark scheme: B
Q4 · In a species of plant, the allele for yellow flowers is dominant to the allele for red…
4 In a species of plant, the allele for yellow flowers is dominant to the allele for red flowers. Two heterozygous yellow-flowered plants are crossed. Which offspring are produced? A 25% with yellow flowers, 75% with red flowers B 50% with yellow flowers, 50% with red flowers C 75% with yellow flowers, 25% with red flowers D 100% with yellow flowers
Mark scheme: C
Q5 · The diagram shows parts of a mesophyll cell
5 The diagram shows parts of a mesophyll cell. X What is found in the part labelled X? A chloroplasts and nucleus B chloroplasts only C nucleus only D watery solution
Mark scheme: D
Q6 · What is meant by fertilisation?
6 What is meant by fertilisation? A combining of male and female nuclei B joining of male and female sex organs C movement of sperms through the uterus to an ovum D reproduction
Mark scheme: A
Q7 · The diagram shows apparatus that could be used to show the presence of carbon dioxide in…
7 The diagram shows apparatus that could be used to show the presence of carbon dioxide in exhaled air. Which liquid would be used in the test-tube? A amylase solution B limewater C sugar solution D water
Mark scheme: B
Q8 · Food tests are performed on four substances
8 Food tests are performed on four substances. Which substance contains fat and protein? test reagent Benedict's biuret ethanol iodine A J J x x B J x x J Cc x J J x D x x Jv Jv key ¥ = positive test result X = negative test result
Mark scheme: C
Q9 · In the geotropic and phototropic responses of a plant shoot, does the shoot grow towards…
9 In the geotropic and phototropic responses of a plant shoot, does the shoot grow towards or away from the stimulus? geotropism phototropism A away from away from B away from towards C towards away from D towards towards
Mark scheme: B
Q10 · Which blood vessel carries blood away from the liver?
10 Which blood vessel carries blood away from the liver? A hepatic artery B hepatic portal vein C hepatic vein D renal vein
Mark scheme: C
Q11 · The diagram shows a food chain
11 The diagram shows a food chain. mahogany tree → caterpillar → songbird → hawk In this food chain, what is the mahogany tree? A carnivore B consumer C herbivore D producer
Mark scheme: D
Q12 · Which statements about X chromosomes in humans are correct?
12 Which statements about X chromosomes in humans are correct? present in present in body cells in body cells of carry genes males females A v v v B v x v Cc J x x D x v x
Mark scheme: A
Q13 · The concentration of carbon dioxide in the atmosphere has increased during the last 200…
13 The concentration of carbon dioxide in the atmosphere has increased during the last 200 years. What has contributed to this change? A burning large areas of forest B increased use of pesticides C planting more crops D using fewer fossil fuels
Mark scheme: A
Q14 · Atoms are the smallest parts of ««1««
14 Atoms are the smallest parts of ««1«« . When atoms of the same type chemically join together, a ««2«« is formed. When different types of atoms chemically join together, they form ««3««. . Which words complete gaps 1, 2 and 3? 1 2 3 A elements molecule compounds B elements molecule mixtures C molecules compound mixtures D molecules mixture compounds
Mark scheme: A
Q15 · Which process is used to separate water from a salt solution?
15 Which process is used to separate water from a salt solution? A chromatography B crystallisation C distillation D filtration
Mark scheme: C
Q16 · When solid zinc carbonate is heated, a different solid and a gas are formed
16 When solid zinc carbonate is heated, a different solid and a gas are formed. Which type of change occurs? A chemical B exothermic C physical D separation
Mark scheme: A
Q17 · The electronic structures of carbon and of hydrogen are shown
17 The electronic structures of carbon and of hydrogen are shown. C H What is the formula of a compound formed between carbon and hydrogen? A CH2 B CH3 C CH4 D C4H
Mark scheme: C
Q18 · Aqueous copper chloride is electrolysed using inert electrodes
18 Aqueous copper chloride is electrolysed using inert electrodes. What is produced at the cathode? A chlorine B copper C hydrogen D oxygen
Mark scheme: B
Q19 · Some white anhydrous copper(II) sulfate powder is put into a beaker of water and stirred
19 Some white anhydrous copper(II) sulfate powder is put into a beaker of water and stirred. Which observation shows that the process is exothermic? A A blue solution forms. B A colourless solution forms. C The beaker becomes cooler. D The beaker becomes warmer.
Mark scheme: D
Q20 · Ammonia is oxidised as shown
20 Ammonia is oxidised as shown. platinum wire ammonia oxides of nitrogen + + air water vapour heat The platinum is chemically unchanged at the end of the reaction. What is the reason for using platinum? A to absorb the heat from the reaction B to filter out oxygen from the air C to increase the rate of the reaction D to neutralise the ammonia
Mark scheme: C
Q21 · Which reaction involves both oxidation and reduction?
21 Which reaction involves both oxidation and reduction? A calcium carbonate → calcium oxide + carbon dioxide B copper oxide + carbon → copper + carbon dioxide C silver nitrate + potassium chloride → silver chloride + potassium nitrate D sulfuric acid + sodium hydroxide → sodium sulfate + water
Mark scheme: B
Q22 · Which substances react with dilute sulfuric acid to form a salt?
22 Which substances react with dilute sulfuric acid to form a salt? magnesium | ™agnesium | magnesium | magnesium oxide carbonate chloride A v 4 W, x B WA V4 x y, Cc v x W, y, D x V4 W, y,
Mark scheme: A
Q23 · An acid reacts with an alkali to produce an aqueous solution of a salt
23 An acid reacts with an alkali to produce an aqueous solution of a salt. Which procedure is used to obtain crystals of the salt from the solution? A Distil the solution. B Evaporate the solution to dryness. C Filter the solution. D Partially evaporate the solution and leave it to cool.
Mark scheme: D
Q24 · The melting points of three elements in Group I and of three elements in Group VII are…
24 The melting points of three elements in Group I and of three elements in Group VII are shown. element group melting point (°C) lithium I 179 sodium I 98 potassium I 64 chlorine VII –101 bromine VII –7 iodine VII 114 What is the trend in reactivity in each group as melting point increases? change in Group I change in Group VII reactivity reactivity A less reactive less reactive B less reactive more reactive C more reactive less reactive D more reactive more reactive
Mark scheme: A
Q25 · What is warmed with a salt to test for ammonium ions?
25 What is warmed with a salt to test for ammonium ions? A aqueous barium chloride B aqueous litmus C aqueous silver nitrate D aqueous sodium hydroxide
Mark scheme: D
Q26 · Which word equation describes the manufacture of lime from limestone?
26 Which word equation describes the manufacture of lime from limestone? A calcium carbonate → calcium hydroxide + carbon dioxide B calcium carbonate → calcium oxide + carbon dioxide C calcium hydroxide → calcium oxide + water D calcium oxide + carbon dioxide → calcium carbonate
Mark scheme: B
Q27 · The structures of four compounds are shown
27 The structures of four compounds are shown. 1 2 3 4 H H H H H H H H H C C H H C C C H C C O H H C H H H H H H H H Which types of compound do these structures represent? 1 2 3 4 A alcohol alkene alkane alcohol B alkane alcohol alkene alkane C alkane alkene alcohol alkane D alkene alkane alcohol alkene
Mark scheme: C
Q28 · A car starts a short journey on a busy road
28 A car starts a short journey on a busy road. It travels 200 m in 1.0 minute, then stops for 2.0 minutes. Finally it travels 1300 m in a further 2.0 minutes. What is the average speed of the car during the journey? A 1.1 m / s B 1.8 m / s C 5.0 m / s D 300 m / s
Mark scheme: C
Q29 · The diagram shows a solid rectangular block made of material of density 2.0 g / cm3
29 The diagram shows a solid rectangular block made of material of density 2.0 g / cm3. 3.0 cm 2.0 cm 2.0 cm What is the mass of the block? A 2.0 g B 6.0 g C 14 g D 24 g
Mark scheme: D
Q30 · A worker carries bricks up a ladder
30 A worker carries bricks up a ladder. The following quantities are known. ● the height the bricks are lifted up ● the time taken for the worker to lift the bricks ● the volume of the bricks ● the weight of the bricks Which quantities are needed to calculate the useful power produced by the worker as he carries the bricks up the ladder? A height, time and volume B height, time and weight C height, volume and weight D time, volume and weight
Mark scheme: B
Q31 · Which statement about gas molecules is not correct?
31 Which statement about gas molecules is not correct? A Increasing the temperature decreases the pressure of the gas at constant volume. B Increasing the temperature makes the molecules move faster. C Molecules of a gas are in constant random motion. D The pressure of the gas is caused by the collision of molecules with the container.
Mark scheme: A
Q32 · Which two processes both require an input of energy?
32 Which two processes both require an input of energy? A boiling and condensation B boiling and melting C condensation and solidification D melting and solidification
Mark scheme: B
Q33 · One type of double glazing consists of two panes of glass separated by a vacuum
33 One type of double glazing consists of two panes of glass separated by a vacuum. glass glass vacuum Which methods of energy transfer are prevented by the vacuum? A conduction and convection only B conduction and radiation only C convection and radiation only D conduction, convection and radiation
Mark scheme: A
Q34 · The diagrams represent a ray of light reflected by a plane mirror
34 The diagrams represent a ray of light reflected by a plane mirror. Which diagram shows possible values for two angles? A B 40° 50° 40° 50° (not to scale) C D 40° 50° 40° 50°
Mark scheme: B
Q35 · Which radiations are included in the electromagnetic spectrum?
35 Which radiations are included in the electromagnetic spectrum? A α-particle radiation and β-particle radiation B α-particle radiation and γ-rays C β-particle radiation and infra-red radiation D γ-rays and infra-red radiation
Mark scheme: D
Q36 · A loudspeaker on a boat produces a pulse of sound in the sea
36 A loudspeaker on a boat produces a pulse of sound in the sea. The pulse is reflected back to the boat by the sea bed. The echo of the pulse is received back at the boat 3.0 s after it is produced. The depth of the sea under the boat is 2250 m. boat pulse of sound sea bed (not to scale) From this information, what is the speed of sound in the sea water? A 330 m / s B 750 m / s C 1500 m / s D 6750 m / s
Mark scheme: C
Q37 · A student carries out four tests with a magnet
37 A student carries out four tests with a magnet. Which result shown is not correct? test result A S magnet N iron bar attracts B S magnet N S magnet N attracts C N magnet S copper bar no effect D N magnet S N magnet S repels
Mark scheme: D
Q38 · Three charged balls P, Q and R are suspended by insulating threads
38 Three charged balls P, Q and R are suspended by insulating threads. Ball P is negatively charged. Ball Q is brought close to ball P. The balls move away from each other. insulating thread P – Q Ball Q is now brought close to ball R. The balls move closer to each other. Q R What are the signs of the charges on ball Q and ball R? ball Q ball R A negative negative B negative positive C positive negative D positive positive
Mark scheme: B
Q39 · The diagram shows two identical resistors connected to a 24 V battery
39 The diagram shows two identical resistors connected to a 24 V battery. One resistor is labelled R. 24 V Y X R What is the potential difference (p.d.) across R, and at which labelled point, X or Y, is the current greater? p.d. across greater current R / V A 12 at X B 12 at Y C 24 at X D 24 at Y
Mark scheme: D
Q40 · The diagrams represent pairs of nuclei of some atoms
40 The diagrams represent pairs of nuclei of some atoms. Which pair shows nuclei of different isotopes of the same element? A B key neutron proton C D
Mark scheme: B
What was in this paper
The subtopics covered by these 40 questions, and how many questions each got. Open one in a new tab to see every Cambridge question on it.
2Preparation of salts2Simple phenomena of magnetism2Arrangement of elements1Carbon cycle1Cell structure1Chromosomes and genes1Circulatory systems1Coordination and response1Density1Electrical circuits1Electrolysis1Electromagnetic spectrum1Elements, compounds and mixtures1Energy, work and power1Exothermic and endothermic reactions1Food chains and food webs1Gas exchange in humans1Homeostasis1Identification of ions and gases1Isotopes1Kinetic particle model of matter1Light1Monohybrid inheritance1Motion1Naming organic compounds1Oxides1Photosynthesis1Physical and chemical changes1Rate of reaction1Redox1Separation and purification1Sexual reproduction in humans1Simple molecules and covalent bonds1Sound1Thermal properties and temperature1Transfer of thermal energy1What you needed in this session
Cambridge’s own grade thresholds for 2017 Oct/Nov, Paper 1 · Variant 3. A higher threshold means an easier paper — the bar moves with how the cohort did.