IGCSE Chemistry (0971) — May–June 2024, 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 boiling point of sodium is 890 degrees C. What happens to sodium atoms as the temperature of a sample of sodium changes from 950 degrees C to 900 degrees C? A The atoms move…
Answer this question and get it marked →Which row shows the conditions for the particles of a gas colliding most frequently? Columns: pressure, temperature. A high, high B high, low C low, high D low, low
Answer this question and get it marked →The diagram shows some properties of particles in an atom (found outside nucleus; relative mass less than 1; relative charge of 1-), with labelled regions A, B, C, D. To which…
Answer this question and get it marked →Some properties of substances W, X, Y and Z are shown (melting point / degrees C, electrical conductivity): W 801, conducts when molten; X -182, does not conduct; Y 840, conducts…
Answer this question and get it marked →Atoms lose or gain electrons to become ions. Which row is correct? Columns: change to the atom, type of ion, charge on ion. A loss of two electrons, cation, 2- B loss of one…
Answer this question and get it marked →A covalent molecule, M, contains four shared pairs of electrons. What is M? A ammonia, NH3 B hydrogen chloride, HCl C methane, CH4 D water, H2O
Answer this question and get it marked →Which substance has a giant covalent structure? A sodium chloride B sodium C ethane D diamond
Answer this question and get it marked →Iron(III) oxide is reduced by carbon monoxide to produce iron and carbon dioxide. What is the balanced equation for this reaction? A Fe2O3 + 2CO - 2Fe + 2CO2 B Fe2O3 + 3CO - 2Fe +…
Answer this question and get it marked →The equation for the reaction between magnesium and dilute hydrochloric acid is: Mg + 2HCl - MgCl2 + H2. Which mass of magnesium chloride is formed when 48.0 g of magnesium…
Answer this question and get it marked →Dilute sulfuric acid and lead(II) bromide are electrolysed separately. Which statements are correct? 1 Colourless gases are produced when dilute sulfuric acid is electrolysed. 2…
Answer this question and get it marked →Which statements about a hydrogen-oxygen fuel cell are correct? 1 The main form of energy released by the fuel cell is heat. 2 The reaction is a redox reaction. 3 An acidic gas is…
Answer this question and get it marked →Which row describes what happens during an endothermic reaction? Columns: thermal energy is transferred, change in temperature of the reaction mixture. A from the surroundings,…
Answer this question and get it marked →Which diagram represents a chemical change? Four diagrams A, B, C, D are shown representing physical and chemical changes at the particle level.
Answer this question and get it marked →A method used to investigate the rate of reaction of calcium carbonate with dilute hydrochloric acid is shown: place 50 cm3 of dilute hydrochloric acid in a conical flask; add a…
Answer this question and get it marked →The rate of reaction between magnesium and hydrochloric acid is investigated. The total volume of hydrogen given off is measured at different times; a graph of the results is…
Answer this question and get it marked →Water is added to anhydrous copper(II) sulfate. Which row describes the direction of energy change and the colour change of the mixture during the reaction? Columns: direction of…
Answer this question and get it marked →Which equation represents an oxidation reaction? A CaCO3 - CaO + CO2 B 4FeO + O2 - 2Fe2O3 C 2NO2 - N2O4 D 2P2O5 - P4O10
Answer this question and get it marked →A farmer treats a field with calcium hydroxide to make it less acidic. When the farmer adds ammonium nitrate fertiliser to the field immediately after the calcium hydroxide, the…
Answer this question and get it marked →Which statement about sodium oxide or nitrogen dioxide is correct? A Nitrogen dioxide is a solid at room temperature. B Nitrogen dioxide is acidic. C Sodium oxide has a lower…
Answer this question and get it marked →A titration method is used to prepare a pure soluble sulfate salt from dilute sulfuric acid. What is the other reagent? A copper(II) oxide B magnesium C sodium hydroxide D zinc…
Answer this question and get it marked →Which row about elements in the Periodic Table is correct? Columns: statement 1, statement 2. A two elements in the same group have similar chemical properties, metals are on the…
Answer this question and get it marked →The table gives some information about three elements in Group I of the Periodic Table (atomic number, melting point in degrees C, density in g/cm3): lithium 3, 181, 0.53; sodium…
Answer this question and get it marked →Which statement describes a transition element? A It is a dull grey metal that only forms white compounds. B It is a high-density metal with a high melting point that is used as a…
Answer this question and get it marked →The electronic configurations of helium, neon and argon are shown. Which row describes these gases? Columns: reactivity, form of the gas, electronic configuration. A reactive,…
Answer this question and get it marked →X is a shiny silver-coloured solid at room temperature and pressure. X is a good conductor of heat and electricity when solid. Which statement about X is correct? A X is an ionic…
Answer this question and get it marked →Which elements can be combined to produce an alloy? 1 magnesium and aluminium 2 nitrogen and oxygen 3 iron and carbon 4 copper and zinc A 1, 3 and 4 B 1 and 2 C 2 and 3 D 4 only
Answer this question and get it marked →Three metals, L, M and N, are added separately to dilute hydrochloric acid and cold water. The results: L hydrogen forms with acid, no reaction with cold water; M hydrogen forms…
Answer this question and get it marked →Which reaction produces carbon dioxide? A cracking of large hydrocarbon molecules B photosynthesis C reaction of a base with a carbonate D thermal decomposition of calcium…
Answer this question and get it marked →A sample of air containing four gases only is analysed. 99.0% of the sample contains the two main gases in the same percentages as in clean, dry air. The remaining 1.0% contains…
Answer this question and get it marked →Which substance contains two elements that are found in NPK fertilisers? A ammonium chloride B calcium hydroxide C potassium nitrate D sodium phosphate
Answer this question and get it marked →Which statement about sulfur is correct? A When sulfur is burned, it produces a substance that causes acid rain. B Sulfur is produced by the thermal decomposition of limestone. C…
Answer this question and get it marked →What are two adverse effects of particulates in the air? 1 acid rain 2 cancer 3 photochemical smog 4 respiratory problems A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4
Answer this question and get it marked →Which formula represents a compound that is a member of the homologous series of alkanes? A C2H4 B C3H6 C C4H8 D C5H12
Answer this question and get it marked →Which statement about ethane is correct? A It rapidly decolourises aqueous bromine. B It does not burn. C It forms long-chain compounds called polymers. D It only contains single…
Answer this question and get it marked →Which raw material is used to make ethanol by fermentation? A carbon dioxide B ethene C glucose D natural gas
Answer this question and get it marked →Which statement about ethanoic acid is correct? A It contains a -COOH group. B It has a pH greater than pH 7. C It reacts with sodium carbonate to form hydrogen gas. D It reacts…
Answer this question and get it marked →Which statement explains why the disposal of plastic waste leads to environmental problems? A Plastic waste forms toxic gases when it is burned. B Plastic waste contains many…
Answer this question and get it marked →Substance X and four known substances, P, Q, R and S, are analysed by chromatography. The chromatogram produced is shown, with X alongside P, Q, R, S. Which statement about X is…
Answer this question and get it marked →Copper is insoluble in water. Copper(II) oxide is a solid that is insoluble in water but reacts with dilute hydrochloric acid. Which method is used to separate copper from a…
Answer this question and get it marked →A salt, S, is dissolved in water and three tests are carried out on the solution formed. test 1: aqueous sodium hydroxide is added - green precipitate forms, insoluble in excess…
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