IGCSE Co-ordinated Sciences (Double Award) past paper questions by topic

1. 1Characteristics of living organisms · Biology65 written
2. 20654.B2.1.01 — Describe and compare the structure of a plant cell with an animal cell, limited to: cell wall, cell membrane, nucleus, cytoplasm, chloroplas · Biology10 written
3. 40654.B2.1.03 — Identify the cell structures listed in 2.1.1 and 2.1.2 in diagrams and images of plant, animal and bacterial cells · Biology9 written
4. 70654.B2.1.06 — State that specialised cells have specific functions, limited to: (a). ciliated cells – movement of mucus in the trachea and bronchi (b). ro · Biology5 written
5. 80654.B2.1.07 — Describe the meaning of the terms: cell, tissue, organ, organ system and organism as illustrated by examples given in the syllabus · Biology5 written
6. 110654.B3.1.01 — Describe diffusion as the net movement of particles from a region of their higher concentration to a region of their lower concentration (i. · Biology5 written
7. 18Active transport · Biology5 written
8. 210654.B4.1.03 — Describe the use of: (a). iodine solution test for starch (b). Benedict’s solution test for reducing sugars (c). biuret test for proteins (d · Biology13 written
9. 220654.B5.1.01 — Describe enzymes as proteins that are involved in all metabolic reactions, where they function as biological catalysts · Biology6 written
10. 230654.B5.1.02 — Describe and explain enzyme action with reference to: the active site, enzyme–substrate complex, substrate and product · Biology7 written
11. 250654.B5.1.04 — Explain the effect of changes in pH on enzyme activity in terms of shape and fit and denaturation · Biology5 written
12. 260654.B6.1.01 — Describe photosynthesis as the process by which plants synthesise carbohydrates from raw materials using energy from light · Biology29 written
13. 270654.B6.1.02 — State the word equation for photosynthesis 5 State the balanced symbol equation for as: photosynthesis as: carbon dioxide + water → glucose · Biology6 written
14. 310654.B6.1.06 — Explain the importance of: (a). nitrate ions for making amino acids (b). magnesium ions for making chlorophyll 4 Investigate and understand · Biology6 written
15. 360654.B7.1.02 — State the principal dietary sources and describe the importance of: (a).carbohydrates (b). fats and oils (c).proteins (d). vitamins, limited · Biology5 written
16. 380654.B7.2.01 — Identify in diagrams and images the main organs of the digestive system, limited to: (a). alimentary canal: mouth, oesophagus, stomach, smal · Biology11 written
17. 490654.B8.1.01 — State the functions of xylem and phloem: (a). xylem – transport of water and mineral ions, and support (b). phloem – transport of sucrose an · Biology5 written
18. 540654.B8.3.01 — Describe transpiration as the loss of water vapour from leaves · Biology8 written
19. 560654.B8.3.03 — Investigate and describe the effects of 4 Explain the effects on the rate of transpiration variation of temperature and wind speed on of var · Biology5 written
20. 600654.B9.1.01 — Describe the circulatory system as a system of blood vessels with a pump and valves to ensure one-way flow of blood · Biology5 written
21. 640654.B9.2.01 — Identify in diagrams and images the structures of the mammalian heart, limited to: muscular wall, septum, left and right ventricles, left an · Biology9 written
22. 690654.B9.4.01 — List the components of blood as: red blood cells, white blood cells, platelets and plasma · Biology5 written
23. 830654.B11.1.01 — Identify in diagrams and images the following 5 Describe the features of gas exchange parts of the breathing system: lungs, surfaces in huma · Biology17 written
24. 860654.B11.1.04 — Investigate and describe the effects of 7 Explain the link between physical activity and physical activity on the rate and depth of the rate · Biology26 written
25. 880654.B12.1.02 — Describe aerobic respiration as the chemical reactions in cells that use oxygen to break down nutrient molecules to release energy · Biology15 written
26. 1020654.B13.2.01 — Describe a hormone as a chemical substance, produced by a gland and carried by the blood, which alters the activity of one or more specific · Biology11 written
27. 1100654.B14.1.01 — Describe a drug as any substance taken into the body that modifies or affects chemical reactions in the body · Biology5 written
28. 1180654.B15.3.01 — Identify in diagrams and images and draw the 7 Identify in diagrams and images and describe following parts of an insect-pollinated flower: · Biology11 written
29. 1580654.B16.3.11 — Use genetic diagrams to predict the results of monohybrid crosses and calculate phenotypic ratios, limited to 1 : 1 and 3 : 1 ratios · Biology8 written
30. 1700654.B18.2.01 — Describe a food chain as showing the transfer of energy from one organism to the next, beginning with a producer · Biology9 written
31. 1800654.B18.2.11 — Describe a trophic level as the position of an organism in a food chain and food web · Biology6 written
32. 183Carbon cycle · Biology7 written
33. 1860654.B19.1.03 — Describe the reasons for habitat destruction, including: (a). increased area for housing, crop plant production and livestock production (b) · Biology6 written
34. 1870654.B19.1.04 — State the undesirable effects of deforestation 5 Explain the undesirable effects of as an example of habitat destruction, to deforestation a · Biology6 written
35. 1880654.B19.2.01 — Explain why organisms become endangered or extinct, including: climate change, habitat destruction, hunting, overharvesting, pollution and i · Biology6 written
36. 10654.C1.1.01 — State the distinguishing properties of solids, liquids and gases · Chemistry34 written
37. 30654.C1.1.03 — Describe changes of state in terms of melting, 5 Explain changes of state in terms of kinetic boiling, evaporating, freezing and condensing · Chemistry6 written
38. 50654.C1.2.01 — Describe and explain diffusion in terms of kinetic particle theory · Chemistry6 written
39. 7Elements, compounds and mixtures · Chemistry14 written
40. 80654.C2.2.01 — Describe the structure of the atom as a central nucleus containing neutrons and protons, surrounded by electrons in shells · Chemistry11 written
41. 90654.C2.2.02 — State the relative charges and relative masses of a proton, a neutron and an electron · Chemistry6 written
42. 140654.C2.3.01 — Define isotopes as different atoms of the 3 State that isotopes of the same element same element that have the same number of have the same · Chemistry12 written
43. 160654.C2.4.01 — Describe the formation of positive ions, known as cations, and negative ions, known as anions · Chemistry5 written
44. 280654.C3.1.01 — State the formulas of the elements and compounds named in the subject content · Chemistry7 written
45. 320654.C3.1.05 — Balance and interpret simple symbol 7 Construct symbol equations with state equations, including state symbols symbols, including ionic equa · Chemistry8 written
46. 410654.C3.3.05 — Calculate stoichiometric reacting masses, limiting reactants, volumes of gases at r.t.p., including conversion between cm3 and dm3 · Chemistry7 written
47. 420654.C4.1.01 — Define electrolysis as the decomposition of an ionic compound, when molten or in aqueous solution, by the passage of an electric current · Chemistry13 written
48. 440654.C4.1.03 — Identify the products formed at the electrodes and describe the observations made during the electrolysis of: (a). molten lead(II) bromide ( · Chemistry7 written
49. 520654.C5.1.01 — State that an exothermic reaction transfers thermal energy to the surroundings leading to an increase in the temperature of the surroundings · Chemistry9 written
50. 59Physical and chemical changes · Chemistry5 written
51. 610654.C6.2.02 — State that a catalyst increases the rate of a 6 State that a catalyst decreases the activation reaction and is unchanged at the end of a ene · Chemistry5 written
52. 650654.C6.3.01 — Define redox reactions as involving simultaneous oxidation and reduction · Chemistry12 written
53. 700654.C7.1.01 — Describe the characteristic properties of acids in terms of their reactions with: (a).metals (b).bases (c).carbonates · Chemistry6 written
54. 710654.C7.1.02 — Describe acids in terms of their effect on the indicators: (a).litmus (b). methyl orange · Chemistry5 written
55. 770654.C7.2.01 — Classify oxides as either acidic, including SO2 and CO2, or basic, including CuO and CaO, related to metallic and non-metallic character · Chemistry5 written
56. 830654.C8.1.01 — Describe the Periodic Table as an arrangement of elements in periods and groups and in order of increasing proton number / atomic number · Chemistry10 written
57. 850654.C8.1.03 — Explain similarities in the chemical properties of elements in the same group of the Periodic Table in terms of their electronic configurati · Chemistry7 written
58. 1030654.C9.4.01 — State the order of the reactivity series as: 4 Describe the relative reactivities of metals potassium, sodium, calcium, magnesium, in terms · Chemistry7 written
59. 1100654.C9.5.05 — Explain sacrificial protection in terms of the reactivity series and in terms of electron loss · Chemistry12 written
60. 1200654.C10.2.03 — State the adverse effect of these air pollutants, limited to: (a). carbon dioxide: higher levels of carbon dioxide leading to increased glob · Chemistry5 written
61. 1300654.C11.2.01 — Name and draw the displayed formulas of: (a). methane and ethane (b).ethene (c).ethanol · Chemistry5 written
62. 1410654.C11.4.02 — Describe the properties of alkanes as being generally unreactive, except in terms of combustion · Chemistry5 written
63. 1430654.C11.5.02 — Describe the test to distinguish between saturated and unsaturated hydrocarbons by their reaction with aqueous bromine · Chemistry6 written
64. 1590654.C12.3.02 — Interpret simple chromatograms to identify: 3 State and use the equation for Rf: (a) . unknown substances by comparison with distance travel · Chemistry5 written
65. 1600654.C12.4.01 — Describe and explain methods of separation and purification using: (a) . a suitable solvent (b) . filtration (c) . crystallisation (d) . sim · Chemistry5 written
66. 1630654.C12.5.01 — Describe tests to identify the anions: (a). carbonate, CO32–, by reaction with dilute acid and then testing for carbon dioxide gas (b). chlo · Chemistry5 written
67. 70654.P1.2.01 — Define speed as distance travelled per unit time; recall and use the equation v= s t · Physics6 written
68. 90654.P1.2.03 — Calculate speed from the gradient of a 11 Calculate acceleration from the gradient of a straight-line section of a distance–time graph strai · Physics8 written
69. 110654.P1.2.05 — Define acceleration as change in velocity per unit time; recall and use the equation Dv a= Dt 3 Sketch, plot and interpret distance–time and · Physics6 written
70. 270654.P1.5.08 — Know that friction (drag) acts on an object moving through a gas (e.g. air resistance) · Physics6 written
71. 290654.P1.5.10 — Recall and use the equation F = ma and know that the resultant force and the acceleration are in the same direction · Physics5 written
72. 370654.P1.6.05 — Recall and use the equation for kinetic energy Ek = 12 mv 2 · Physics5 written
73. 540654.P2.3.01 — Identify and give examples of typical good 2 Describe thermal conduction in solids in thermal conductors and bad thermal terms of atomic or · Physics6 written
74. 660654.P3.2.02 — Describe the formation of an optical image 4 Describe the formation of an optical image by by a vertical plane mirror and give its a plane m · Physics7 written
75. 700654.P3.2.06 — Define the critical angle as the angle of incidence at which the angle of refraction is 90° and above which all light is totally internally · Physics5 written
76. 830654.P4.1.01 — Describe the forces between magnetic 5 Describe a magnetic field as a region in which poles and between magnets and magnetic a magnetic pole · Physics7 written
77. 860654.P4.2.02 — Recall and use the equation for resistance 3 Sketch and explain the current–voltage graph V of a resistor of constant resistance R= I · Physics6 written
78. 960654.P4.3.01 — Draw and interpret circuit diagrams 2 Draw and interpret circuit diagrams containing cells, batteries, power supplies, containing generators · Physics6 written
79. 990654.P4.3.04 — Calculate the combined resistance of two or 7 Recall and use in calculations, the fact that: more resistors in series (a) . the sum of the c · Physics6 written
80. 1250654.P5.2.02 — Identify alpha (α), beta (β) and gamma (γ) emissions by recalling: (a). their nature (b). their relative ionising effects (c). their relativ · Physics7 written

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