IGCSE Chemistry (0620) — May–June 2023, Paper 11
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →The diagram shows the result of dropping a purple crystal into water. after water five hours purple solution purple crystal Which processes take place in this experiment? chemical…
Answer this question and get it marked →Which row about elements, mixtures and compounds is correct? metallic non-metallic mixture compound element element A copper methane brass sulfur B brass sulfur copper methane C…
Answer this question and get it marked →What are the relative charge and relative mass of an electron? relative relative charge mass A 0 1 B 0 2000 C –1 1 –1 1 D 2000
Answer this question and get it marked →The atomic structures of four particles, W, X, Y and Z, are shown. electrons neutrons protons W 2 2 2 X 2 2 3 Y 2 3 2 Z 3 2 3 Which particles are isotopes of the same element? A W…
Answer this question and get it marked →Which row shows the properties of an ionic compound? electrical melting point conductivity / °C of solid A good 98 B good 3652 C poor 78 D poor 801
Answer this question and get it marked →Which row describes the formation of single covalent bonds in methane? A atoms share a pair of electrons both atoms gain a noble gas electronic structure B atoms share a pair of…
Answer this question and get it marked →Which equation represents the neutralisation of nitric acid using sodium hydroxide? A NaOH(aq) + HNO3(aq) → NaNO3(aq) + H2O(l) B NaOH(aq) + HNO3(aq) → NaNO3(l) + H2O(l) C NaOH(l)…
Answer this question and get it marked →What is the relative formula mass of ammonium nitrate, NH4NO3? A 80 B 108 C 122 D 150
Answer this question and get it marked →Concentrated aqueous sodium chloride is electrolysed using inert electrodes. Gases X and Y are produced at the electrodes shown. X Y concentrated aqueous sodium chloride – + – +…
Answer this question and get it marked →Which statement about hydrogen fuel cells is correct? A Hydrogen fuel cells do not produce carbon dioxide. B Hydrogen fuel cells do not need oxygen. C The waste from a hydrogen…
Answer this question and get it marked →A reaction pathway diagram is shown. products energy reactants progress of reaction Which statement about this reaction is correct? A The reaction rate increases during the…
Answer this question and get it marked →Lumps of calcium carbonate react with dilute hydrochloric acid as shown. CaCO3 + 2HCl → CaCl 2 + H2O + CO2 Which change in conditions decreases the rate of the reaction? A…
Answer this question and get it marked →Solid copper(II) sulfate exists in two different forms, anhydrous and hydrated. One of these forms is blue and the other is white. The change between these two forms is…
Answer this question and get it marked →Four redox equations and statements about the equations are shown. reaction statement 1 C + O2 → CO2 carbon is oxidised 2 CO2 + C → 2CO carbon dioxide is oxidised 3 CO2 + C → 2CO…
Answer this question and get it marked →Sodium hydroxide forms an alkaline solution with a pH of 14. Which indicator turns yellow when added to this solution? A litmus B methyl orange C thymolphthalein D universal…
Answer this question and get it marked →Which row identifies an acidic oxide and a basic oxide? acidic oxide basic oxide A CaO CuO B CaO SO2 C CO2 CuO D CO2 SO2
Answer this question and get it marked →A student makes aqueous copper(II) chloride by adding excess copper(II) carbonate to dilute hydrochloric acid. What is the next step in the method in the formation of solid…
Answer this question and get it marked →Which statements about the trends across a period of the Periodic Table are correct? 1 Aluminium is more metallic than sodium. 2 Beryllium is more metallic than carbon. 3 Boron is…
Answer this question and get it marked →Which row shows the trend in melting point, density and reactivity as Group I is descended? melting point density reactivity A increases decreases decreases B decreases increases…
Answer this question and get it marked →Which row describes a similarity and a difference between chlorine and bromine? similarity difference A both are gases at room chlorine and bromine temperature and pressure have…
Answer this question and get it marked →Which statement describes transition elements? A They have high densities and high melting points. B They have high densities and low melting points. C They have low densities and…
Answer this question and get it marked →Which diagram shows the electronic structure of a noble gas? A B C D
Answer this question and get it marked →Which gas is made when powdered zinc is added to dilute hydrochloric acid? A carbon dioxide B chlorine C hydrogen D oxygen
Answer this question and get it marked →Which metal is used in aircraft manufacture because it has a low density? A aluminium B copper C iron D potassium
Answer this question and get it marked →The diagram represents the structure of a solid. Which solids does the diagram represent? brass graphite sodium chloride A ✓ ✓ ✗ B ✓ ✗ ✗ C ✗ ✓ ✓ D ✗ ✗ ✓
Answer this question and get it marked →Three students, X, Y and Z, are told that solid P reacts with dilute acids and also conducts electricity. The table shows the students’ suggestions about the identity of P. X Y Z…
Answer this question and get it marked →Which substances in the air are needed for iron to rust? A oxygen and water B oxygen only C water and carbon dioxide D water only
Answer this question and get it marked →Part of the reactivity series of metals is shown. metal P decreasing reactivity carbon metal Q metal R Which row shows how each metal is extracted from its ore? metal P metal Q…
Answer this question and get it marked →Several processes are used to treat domestic water. Which row identifies a reason for the given process? process reason A chlorination removes impurities B filtration removes…
Answer this question and get it marked →Which pair of compounds make an NPK fertiliser? A ammonium sulfate and potassium phosphate B calcium hydroxide and ammonium nitrate C calcium phosphate and potassium chloride D…
Answer this question and get it marked →Some information about gas X is listed. ● It is not present in clean, dry air. ● It is not a cause of respiratory problems. ● It is responsible for global warming. What is X? A…
Answer this question and get it marked →Part of the structure of a molecule of vitamin A is shown. H H C H H H C C C C C O H H H H Which statements about this part of the structure are correct? 1 It is saturated. 2…
Answer this question and get it marked →The fractional distillation of petroleum is shown. Which fraction contains hydrocarbons with the longest chain length? fuel gas A B C D petroleum bitumen
Answer this question and get it marked →Which equation represents the cracking of an alkane? A 3C2H4 → C6H12 B C6H12 + H2 → C6H14 C C6H14 → 6C + 7H2 D C6H14 → C2H4 + C4H10
Answer this question and get it marked →Which statements about ethanol are correct? 1 Ethanol is made by reacting steam with ethene at 300 °C. 2 Ethanol is made by fermentation at 55 °C. 3 Ethanol burns to produce…
Answer this question and get it marked →Which substances react with aqueous ethanoic acid to form a gas? 1 magnesium 2 magnesium carbonate 3 magnesium oxide A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only
Answer this question and get it marked →In reaction R, 2000 molecules of CH2=CH2 react to form a single molecule X only. 2000 CH2=CH2 → X Which terms describe reaction R, CH2=CH2 and X? reaction R CH2=CH2 X A addition…
Answer this question and get it marked →The concentration of acids and alkalis can be determined by titration. Which pieces of equipment are needed to perform a titration? 1 2 3 4 A 1 and 2 B 1 and 3 C 2 and 3 D 2 and 4
Answer this question and get it marked →Which process is used to produce drinking water from sea water? A crystallisation B distillation C filtration D chlorination
Answer this question and get it marked →The results of two separate tests on a white solid X are shown. test result add dilute nitric acid effervescence add aqueous a gas is formed which turns sodium hydroxide and warm…
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