Cambridge IGCSE Sciences - Co-ordinated (Double) 0654 — 2017 Oct/Nov Paper 1 · Variant 1
0654/11/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 · A child blows into a rubber balloon
1 A child blows into a rubber balloon. What is the percentage of oxygen inside the balloon? A 0% B 4% C 16% D 21%
Mark scheme: C
Q2 · A seedling is placed with its root horizontal to the ground
2 A seedling is placed with its root horizontal to the ground. Three days later, the root is longer and curves towards the earth. Which characteristics of living things does this show? A growth, nutrition and movement B growth, sensitivity and movement C movement, nutrition and respiration D nutrition, sensitivity and respiration
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 · The diagram shows a reflex arc
4 The diagram shows a reflex arc. Q P bee R If the neurone at R is stimulated, what effect does this have on the neurones at P and Q? effect on P effect on Q A no effect no effect B no effect stimulated C stimulated no effect D stimulated stimulated
Mark scheme: A
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 · A human baby develops inside its mother attached to the wall of her uterus by the…
6 A human baby develops inside its mother attached to the wall of her uterus by the placenta and umbilical cord. Which structure becomes embedded in the uterus wall to establish this connection? A a ball of cells grown from the zygote B a sperm C the unfertilised egg D the zygote
Mark scheme: A
Q7 · Water enters root hair cells from the soil
7 Water enters root hair cells from the soil. What happens to most of this water after it has entered the cells? A It is used in photosynthesis in the root cells. B It moves out again when the soil is dry. C It moves to the leaves and is lost by transpiration. D The cell uses it in respiration.
Mark scheme: C
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 Jv v x x B Jv x x Jv Cc x v v x D x x v v key ¥ = positive test result X = negative test result
Mark scheme: C
Q9 · The graph shows the effect of temperature on the activity of a mammalian enzyme
9 The graph shows the effect of temperature on the activity of a mammalian enzyme. 14 12 10 activity of enzyme 8 / arbitrary units 6 4 2 0 0 10 20 30 40 50 60 70 temperature / °C Which conclusion can be drawn from the graph? A The activity increases in a linear manner up to 35 °C. B The activity is four times greater at 40 °C than at 20 °C. C The enzyme has a higher activity at 60 °C than at 0 °C. D The optimum temperature for this enzyme is 37 °C.
Mark scheme: B
Q10 · What is the main result of natural selection?
10 What is the main result of natural selection? A fewer genes being passed on to offspring B higher-yielding food crops C organisms better adapted to the environment D sheep that produce better quality wool
Mark scheme: C
Q11 · In a food chain, which organism does not rely on another organism to supply it with…
11 In a food chain, which organism does not rely on another organism to supply it with energy? 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 v v x «KX v x v x x v
Mark scheme: A
Q13 · What could deforestation cause?
13 What could deforestation cause? A a decrease in carbon dioxide levels and a decrease in flooding B a decrease in carbon dioxide levels and an increase in flooding C an increase in carbon dioxide levels and a decrease in flooding D an increase in carbon dioxide levels and an increase in flooding
Mark scheme: D
Q14 · Which statement describes an oxygen molecule?
14 Which statement describes an oxygen molecule? A It consists of two oxide ions. B It consists of two oxygen atoms. C It consists of two oxygen compounds. D It consists of two oxygen ions.
Mark scheme: B
Q15 · An excess of a soluble salt is mixed with water
15 An excess of a soluble salt is mixed with water. The mixture is filtered and the filtrate is distilled. Which row describes the filtrate and the distilled liquid? filtrate distilled liquid A solution solution B solution solvent C solvent solution D solvent solvent
Mark scheme: B
Q16 · A student completes four experiments
16 A student completes four experiments. Experiment 1 The student heats some ice and it melts. Experiment 2 The student heats some blue copper sulfate crystals and a white solid is formed. Steam is given off. Experiment 3 The student grinds up a lump of chalk to a powder. Experiment 4 The student heats green copper carbonate crystals and a black solid is formed. A gas is produced that turns limewater milky. Which row describes the changes in the experiments? physical changes chemical changes A 1 and 3 2 and 4 B 1 and 4 2 and 3 C 2 and 3 1 and 4 D 2 and 4 1 and 3
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 · Electrolysis of two solutions, aqueous copper chloride and dilute sulfuric acid, is…
18 Electrolysis of two solutions, aqueous copper chloride and dilute sulfuric acid, is carried out using the apparatus shown. Which electrode produces a colourless gas that ‘pops’ with a lighted splint? + – + – electrode A electrode B electrode C electrode D aqueous dilute copper sulfuric chloride acid
Mark scheme: D
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 · In which change is the oxide of phosphorus, P2O3, reduced?
21 In which change is the oxide of phosphorus, P2O3, reduced? P4 A D B P4O10 P2O3 P4O6 C P2O5
Mark scheme: A
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 magnesium oxide magnesium carbonate magnesium chloride
Mark scheme: A
Q23 · Compound X is heated with a mixture of aqueous sodium hydroxide and aluminium powder
23 Compound X is heated with a mixture of aqueous sodium hydroxide and aluminium powder. A gas is made which turns damp red litmus blue. Which compound cannot be X? A ammonium hydroxide B ammonium nitrate C potassium hydroxide D potassium nitrate
Mark scheme: C
Q24 · Which trend is observed as the Periodic Table is crossed from left to right?
24 Which trend is observed as the Periodic Table is crossed from left to right? A The elements change from metallic to non-metallic and the oxides of the elements change from acidic to basic. B The elements change from metallic to non-metallic and the oxides of the elements change from basic to acidic. C The elements change from non-metallic to metallic and the oxides of the elements change from acidic to basic. D The elements change from non-metallic to metallic and the oxides of the elements change from basic to acidic.
Mark scheme: B
Q25 · The diagram represents the composition of clean air
25 The diagram represents the composition of clean air. gas X gas Y Which row identifies gas X and gas Y? gas X gas Y A carbon dioxide nitrogen B nitrogen oxygen C oxygen carbon dioxide D oxygen nitrogen
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 · What are the products of the complete combustion of ethanol?
27 What are the products of the complete combustion of ethanol? A carbon dioxide + carbon monoxide + water B carbon dioxide + hydrogen C carbon dioxide + water D carbon monoxide + water
Mark scheme: C
Q28 · The diagram shows a distance-time graph for a vehicle
28 The diagram shows a distance-time graph for a vehicle. distance P Q 0 0 time Which row describes the motion of the vehicle in region P and in region Q of the graph? P Q A at rest changing speed B at rest constant speed C constant speed changing speed D constant speed constant speed
Mark scheme: B
Q29 · A metal block is heated until it is completely melted
29 A metal block is heated until it is completely melted. None of the melted metal evaporates. The metal now solidifies. What happens to the mass of the metal during the changes of state? mass during mass during melting solidification A decreases increases B increases decreases C increases stays constant D stays constant stays constant
Mark scheme: D
Q30 · The diagram shows a solid rectangular block made of material of density 2.0 g / cm3
30 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
Q31 · A worker carries bricks up a ladder
31 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
Q32 · A gas is contained in a cylinder of constant volume
32 A gas is contained in a cylinder of constant volume. The gas is cooled and this causes its pressure to change. What happens to the speed of the molecules of the gas, and what happens to the pressure of the gas? speed of pressure molecules of gas A decreases decreases B decreases increases C increases decreases D increases increases
Mark scheme: A
Q33 · A boy sits near a campfire
33 A boy sits near a campfire. He holds an iron bar with one end in the fire. His hand becomes hot. iron bar In which ways does thermal energy (heat) from the fire reach his hand? A conduction and convection only B conduction and radiation only C convection and radiation only D conduction, convection and radiation
Mark scheme: B
Q34 · The diagram represents a wave
34 The diagram represents a wave. displacement 0 0 distance X Y How many wavelengths are there between X and Y? A 2 B 1 C 1 1 D 3 3 2
Mark scheme: C
Q35 · A plane mirror is used to form an image of an object
35 A plane mirror is used to form an image of an object. At which labelled point is the image formed? A object ray of light B C plane mirror D
Mark scheme: D
Q36 · Which group of electromagnetic radiations is arranged in order of increasing frequency?
36 Which group of electromagnetic radiations is arranged in order of increasing frequency? A infra-red, visible light, ultraviolet B ultra-violet, visible light, radio waves C X-rays, radio waves, γ-rays D γ-rays, X-rays, infra-red
Mark scheme: A
Q37 · Four loudspeakers each vibrate at the frequencies shown
37 Four loudspeakers each vibrate at the frequencies shown. Which loudspeaker produces the highest-pitched sound that can be heard by a human? A 5.0 × 103 Hz B 15 × 103 Hz C 25 × 103 Hz D 35 × 103 Hz
Mark scheme: B
Q38 · Which row gives the unit for energy and the unit for electromotive force (e.m.f.)?
38 Which row gives the unit for energy and the unit for electromotive force (e.m.f.)? energy e.m.f. A J N B J V C W N D W V
Mark scheme: B
Q39 · Three charged balls P, Q and R are suspended by insulating threads
39 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
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.
2Simple molecules and covalent bonds2Air quality and climate1Alcohols1Arrangement of elements1Biological molecules1Cell structure1Characteristics of living organisms1Chromosomes and genes1Coordination and response1Density1Electrical quantities1Electrolysis1Electromagnetic spectrum1Energy, work and power1Enzymes1Exothermic and endothermic reactions1Food chains and food webs1Gas exchange in humans1General properties of waves1Habitat destruction1Homeostasis1Identification of ions and gases1Isotopes1Light1Motion1Oxides1Physical and chemical changes1Preparation of salts1Rate of reaction1Redox1Selection1Separation and purification1Sexual reproduction in humans1Simple phenomena of magnetism1Sound1Transfer of thermal energy1Transpiration1What you needed in this session
Cambridge’s own grade thresholds for 2017 Oct/Nov, Paper 1 · Variant 1. A higher threshold means an easier paper — the bar moves with how the cohort did.