Cambridge IGCSE Sciences - Co-ordinated (9-1) 0973 — 2022 Oct/Nov Paper 1 · Variant 1
0973/11/O/N/22 · 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 · Which characteristic of living organisms involves chemical reactions that break down…
1 Which characteristic of living organisms involves chemical reactions that break down nutrient molecules to release energy? A excretion B nutrition C reproduction D respiration
Mark scheme: D
Q2 · What is the formula for magnification?
2 What is the formula for magnification? actual size A image size actual size B image size 100 image size C actual size image size D mm actual size
Mark scheme: C
Q3 · Glycerol is a component of which large molecules?
3 Glycerol is a component of which large molecules? A fats B glycogen C proteins D starch
Mark scheme: A
Q4 · Which elements can be found in an enzyme molecule?
4 Which elements can be found in an enzyme molecule? 1 carbon 2 nitrogen 3 oxygen A 1, 2 and 3 B 1 and 3 only C 1 only D 2 only
Mark scheme: A
Q5 · Which row is correct for photosynthesis?
5 Which row is correct for photosynthesis? raw materials products A carbon dioxide and glucose oxygen and water B carbon dioxide and water oxygen and glucose C oxygen and glucose carbon dioxide and water D oxygen and water carbon dioxide and glucose
Mark scheme: B
Q6 · Dogs are mammals and have the same types of teeth as humans
6 Dogs are mammals and have the same types of teeth as humans. Which tooth is a canine? B A D C
Mark scheme: D
Q7 · The diagrams represent sections through a root, a stem and a leaf mid-rib, not drawn to…
7 The diagrams represent sections through a root, a stem and a leaf mid-rib, not drawn to the same scale. P Q R S In which row are the sections correctly identified? root stem leaf A P S R B Q R S C R P Q D S Q P
Mark scheme: C
Q8 · The diagram shows apparatus used to investigate respiration of blowfly larvae
8 The diagram shows apparatus used to investigate respiration of blowfly larvae. Air is sucked through the solutions of hydrogencarbonate indicator as shown. Hydrogencarbonate indicator turns orange with carbon dioxide at atmospheric concentration. It turns yellow with high carbon dioxide concentration. direction direction of air of air hydrogencarbonate hydrogencarbonate indicator indicator flask X flask Y What are the colours of the hydrogencarbonate indicator in the flasks after 24 hours? flask X flask Y A orange orange B orange yellow C yellow orange D yellow yellow
Mark scheme: B
Q9 · When a seed germinates in the soil, the root grows downwards
9 When a seed germinates in the soil, the root grows downwards. Which type of response is the root exhibiting? A negative gravitropism B negative phototropism C positive gravitropism D positive phototropism
Mark scheme: C
Q10 · The graph shows the change in number of new HIV infections and deaths from AIDS between…
10 The graph shows the change in number of new HIV infections and deaths from AIDS between 1990 and 2014. 4 3.5 3 2.5 million 2 new HIV infections people 1.5 1 anti-HIV drugs used 0.5 deaths from AIDS 0 1990 1995 2000 2005 2010 2015 year What does the graph show? 1 The number of new HIV infections fell after condom use was promoted. 2 The use of anti-HIV drugs has led to a decrease in deaths from AIDS. 3 The highest rate of deaths from AIDS occurred in 1995. A 1 and 2 only B 3 only C 1, 2 and 3 D 2 only
Mark scheme: D
Q11 · Which sex chromosomes are found in a healthy male human?
11 Which sex chromosomes are found in a healthy male human? A XO B XX C XY D YY
Mark scheme: C
Q12 · Which type of organism gets its energy from the remains of dead organisms or other…
12 Which type of organism gets its energy from the remains of dead organisms or other organic waste? A a carnivore B a decomposer C a herbivore D a producer
Mark scheme: B
Q13 · What is an undesirable effect of deforestation?
13 What is an undesirable effect of deforestation? A It increases the oxygen concentration of the atmosphere. B It leads to erosion and loss of soil. C It makes land available for agriculture. D It pollutes the air with methane.
Mark scheme: B
Q14 · Which properties are used to distinguish between solids and gases?
14 Which properties are used to distinguish between solids and gases? 1 compressibility 2 melting point 3 flammability A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3
Mark scheme: A
Q15 · An atom of fluorine is represented by 19 9F
15 An atom of fluorine is represented by 19 9F. How many electrons does this atom contain? A 9 B 10 C 19 D 28
Mark scheme: A
Q16 · Hydrogen reacts with oxygen to produce water
16 Hydrogen reacts with oxygen to produce water. What is the balanced equation for this reaction? A H2 + O2 H2O B H2 + O2 2H2O C H2 + O H2O D 2H2 + O2 2H2O
Mark scheme: D
Q17 · Which process is used to produce sodium and chlorine from the compound sodium chloride?
17 Which process is used to produce sodium and chlorine from the compound sodium chloride? A chromatography B cracking C distillation D electrolysis
Mark scheme: D
Q18 · Equal amounts of substances W, X, Y and Z are reacted separately with equal amounts of…
18 Equal amounts of substances W, X, Y and Z are reacted separately with equal amounts of dilute acid. The following temperature changes are recorded. substance temperature change / C W increases by 8 X decreases by 6 Y increases by 9 Z decreases by 4 Which substances produce the most exothermic and the least endothermic reactions? most least exothermic endothermic A W X B W Z C X Y D Y Z
Mark scheme: D
Q19 · The rate of a reaction between a powdered metal and a dilute acid is investigated by…
19 The rate of a reaction between a powdered metal and a dilute acid is investigated by measuring the volume of hydrogen gas produced per minute. The investigation is repeated using a catalyst. The same mass of powdered metal and the same volume and concentration of acid is used. Which statement about the second investigation is correct? A The rate of the reaction is higher and a greater total volume of hydrogen is produced. B The rate of the reaction is higher and the same total volume of hydrogen is produced. C The rate of the reaction is lower and a smaller total volume of hydrogen is produced. D The rate of the reaction is lower and the same total volume of hydrogen is produced.
Mark scheme: B
Q20 · Copper carbonate is reacted with dilute hydrochloric acid
20 Copper carbonate is reacted with dilute hydrochloric acid. Which gas is given off? A carbon dioxide B hydrogen C nitrogen D sulfur dioxide
Mark scheme: A
Q21 · Which statement about the halogens is not correct?
21 Which statement about the halogens is not correct? A Iodine has a darker colour than chlorine. B They all exist as diatomic molecules. C They are all gases at room temperature. D They are all non-metals.
Mark scheme: C
Q22 · Filament lamps require an inert atmosphere
22 Filament lamps require an inert atmosphere. Which gas is used to fill these lamps? A argon B helium C hydrogen D oxygen
Mark scheme: A
Q23 · Alloys are formed by dissolving one metal in another
23 Alloys are formed by dissolving one metal in another. Alloys are ……1…… . ……2…… alloys conduct electricity. Which words complete gaps 1 and 2? 1 2 A compounds All B compounds Some C mixtures All D mixtures Some
Mark scheme: C
Q24 · Metal X is extracted from its ore by heating the ore with carbon
24 Metal X is extracted from its ore by heating the ore with carbon. Which statement explains why carbon is used? A Carbon is a non-metal. B Carbon is more reactive than X. C Carbon reacts with oxygen in the air. D Carbon is less reactive than X.
Mark scheme: B
Q25 · Water is tested with white copper(II) sulfate powder and with blue cobalt(II) chloride…
25 Water is tested with white copper(II) sulfate powder and with blue cobalt(II) chloride paper. Which row shows the results of the tests? copper(II) sulfate cobalt(II) chloride A turns blue stays blue B turns blue turns pink C stays white turns pink D stays white stays blue
Mark scheme: B
Q26 · What is not a use of limestone?
26 What is not a use of limestone? A manufacture of calcium oxide B neutralising industrial waste products C purifying water D treating acidic soil
Mark scheme: C
More questions on The characteristic properties of acids and bases
Q27 · In which row is the name of the structure correct?
27 In which row is the name of the structure correct? structure name H H A C C methane H H H H B H C C O H ethene H H H H C H C C H ethane H H H D H C H ethanol H
Mark scheme: C
Q28 · The graph shows how the speed of an object varies with time
28 The graph shows how the speed of an object varies with time. speed 0 0 time Which graph is the distance–time graph for this object? A B distance distance 0 0 0 time 0 time C D distance distance 0 0 0 time 0 time
Mark scheme: D
Q29 · Five identical solid glass balls, each of mass 5.0 g, are put into a measuring cylinder…
29 Five identical solid glass balls, each of mass 5.0 g, are put into a measuring cylinder containing water. The water level in the measuring cylinder rises from the 30 cm3 mark to the 40 cm3 mark. What is the density of the glass from which the balls are made? A 0.50 g / cm3 B 1.2 g / cm3 C 1.6 g / cm3 D 2.5 g / cm3
Mark scheme: D
Q30 · A force of 10 N is applied to a beam at a distance of 0.25 m from a pivot
30 A force of 10 N is applied to a beam at a distance of 0.25 m from a pivot. 10 N 0.25 m pivot Which calculation gives the moment of the force about the pivot in N m? 10 A 10 0.25 B 0.25 C 10 + 0.25 D 10 – 0.25
Mark scheme: A
Q31 · Which electrical device transfers chemical energy into electrical energy?
31 Which electrical device transfers chemical energy into electrical energy? A battery B lamp C electric motor D television
Mark scheme: A
Q32 · From which type of energy is electrical energy transferred in a hydroelectric power…
32 From which type of energy is electrical energy transferred in a hydroelectric power station? A chemical potential energy B elastic potential (strain) energy C gravitational potential energy D nuclear energy
Mark scheme: C
Q33 · A hot metal ball is placed in a small hollow in a piece of wood
33 A hot metal ball is placed in a small hollow in a piece of wood. Two thermometers are placed equal distances from the ball, one at position P and one at position Q. Q hot metal ball P wood Which thermometer gives the higher reading and why? higher reading reason A thermometer at P the air conducts heat sideways, not upwards B thermometer at P the wood conducts heat sideways, not upwards C thermometer at Q convection carries heat upwards, not sideways D thermometer at Q infrared rays always carry heat upwards, not sideways
Mark scheme: C
Q34 · Which description is correct for the image of an object formed by a vertical plane mirror?
34 Which description is correct for the image of an object formed by a vertical plane mirror? A upright and larger than the object B upright and the same size as the object C upside down and smaller than the object D upside down and the same size as the object
Mark scheme: B
Q35 · Two students conduct an experiment to determine the speed of sound in air
35 Two students conduct an experiment to determine the speed of sound in air. They stand 639 m apart. One student hits two blocks of wood together while the other uses a stop-watch to time how long it takes for the sound to reach him. It takes 1.80 s for the sound to reach the second student. What is the speed of sound in air, calculated using these results? A 330 m / s B 355 m / s C 710 m / s D 1150 m / s
Mark scheme: B
Q36 · Which type of magnet can be switched on and off many times per second?
36 Which type of magnet can be switched on and off many times per second? A an electromagnet only B a permanent magnet only C both electromagnets and permanent magnets D neither electromagnets or permanent magnets
Mark scheme: A
Q37 · In which circuit is it possible to change the brightness of one lamp without changing the…
37 In which circuit is it possible to change the brightness of one lamp without changing the brightness of the other lamp? A B C D
Mark scheme: B
Q38 · Circuits 1 and 2 contain identical cells and identical resistors
38 Circuits 1 and 2 contain identical cells and identical resistors. Each resistor has the same resistance R. The current in the cell in circuit 1 is I. I R R R circuit 1 circuit 2 How do the total resistance of circuit 2 and the current in the cell in circuit 2 compare with R and I ? total resistance current in cell of circuit 2 in circuit 2 A greater than R greater than I B greater than R less than I C less than R greater than I D less than R less than I
Mark scheme: C
Q39 · The current in an electric heater during normal use is 11 A
39 The current in an electric heater during normal use is 11 A. What is an appropriate rating for a fuse to protect the heater? A 3 A B 10 A C 13 A D 36 A
Mark scheme: C
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.
2Electrical circuits2Energy, work and power2Alloys and their properties1Atomic structure and the Periodic Table1Characteristics of living organisms1Chromosomes and genes1Coordination and response1Density1Digestive system1Diseases and immunity1Electrical safety1Electrolysis1Exothermic and endothermic reactions1Extraction of metals1Food chains and food webs1Forces1Formulas1Group VII properties1Habitat destruction1Identification of ions and gases1Isotopes1Light1Motion1Naming organic compounds1Noble gases1Photosynthesis1Preparation of salts1Rate of reaction1Respiration1Simple phenomena of magnetism1Size of specimens1Solids, liquids and gases1Sound1The characteristic properties of acids and bases1Transfer of thermal energy1Xylem and phloem1What you needed in this session
Cambridge’s own grade thresholds for 2022 Oct/Nov, Paper 1 · Variant 1. A higher threshold means an easier paper — the bar moves with how the cohort did.