IGCSE Chemistry (0620) — October–November 2024, Paper 12
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →The table shows some information about the three states of matter. particle separation particle arrangement type of motion --- --- --- --- 1 touching with some particles having…
Answer this question and get it marked →A diagram shows changes of state between solid, liquid and gas, with arrows A and B pointing from liquid to gas and C and D pointing the other way. Which arrow represents…
Answer this question and get it marked →In which states of matter does diffusion occur readily? A gases and liquids B gases only C liquids and solids D solids only
Answer this question and get it marked →Three boxes P, Q and R each show a diagram of particles. Which statement about the boxes P, Q and R is correct? A Box P contains two compounds, and box R contains two elements. B…
Answer this question and get it marked →Which information about an element is given by its atomic number? A the number of protons in the nucleus of an atom of an element B the number of particles in the nucleus of an…
Answer this question and get it marked →The symbols represent four atoms (the letters used are not the usual atomic symbols): W has nucleon number 40 and proton number 20; X has nucleon number 40 and proton number 19; Y…
Answer this question and get it marked →Covalent bonds are formed when electrons are ......1...... . Most covalent compounds have ......2...... electrical conductivity. Which words correctly complete gaps 1 and 2? 1 2…
Answer this question and get it marked →Which row describes the structure and a use of diamond? structure use --- --- --- A ionic in cutting tools B ionic as a lubricant C giant covalent in cutting tools D giant…
Answer this question and get it marked →Which symbol equation represents the reaction between aqueous sodium hydroxide and dilute sulfuric acid? A Na2OH + H2SO4 - 2NaSO4 + H2O B Na(OH)2 + H2SO4 - Na2SO4 + 2H2O C 2NaOH +…
Answer this question and get it marked →What is the relative formula mass of magnesium bromide? A 47 B 82 C 104 D 184
Answer this question and get it marked →Three substances are listed. 1 solid copper 2 aqueous sodium bromide 3 solid lead(II) bromide Which substances conduct electricity? A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2…
Answer this question and get it marked →Hydrogen-oxygen fuel cells can be used to power cars. Which processes produce the fuel of a hydrogen-oxygen fuel cell? 1 the cracking of hydrocarbons 2 the electrolysis of dilute…
Answer this question and get it marked →Molten sodium sulfide, Na2S, is electrolysed using inert electrodes. Which row identifies the product at each electrode? cathode anode --- --- --- A sodium sulfur B sulfur sodium…
Answer this question and get it marked →The temperature of the water in two beakers, X and Y, is measured as 21.5 °C. 5 g of sodium chloride is dissolved in the water in beaker X. The temperature changes to 18.0 °C. 5 g…
Answer this question and get it marked →Which process involves a chemical change? A adding sodium chloride to water B adding magnesium to hydrochloric acid C heating solid iodine until it turns into a gas D melting lead
Answer this question and get it marked →Which two pieces of apparatus are most useful to measure the rate of a reaction in which a gas is given off? A accurate balance and gas syringe B accurate balance and thermometer…
Answer this question and get it marked →Reaction 1 and reaction 2 both produce a gas. The total volume of gas produced in each reaction is measured every minute for 10 minutes. A graph of the results is shown: curve 2…
Answer this question and get it marked →When a few drops of water are added to a solid, E, the colour changes from blue to pink. What is E? A anhydrous cobalt(II) chloride B anhydrous copper(II) sulfate C hydrated…
Answer this question and get it marked →The equation for the reaction of magnesium with copper(II) oxide is shown. Mg + CuO - MgO + Cu Which word describes this reaction? A combustion B decomposition C neutralisation D…
Answer this question and get it marked →Compound M contains calcium. Two reactions of M are listed. - M reacts with dilute hydrochloric acid to form a salt and water only. - M reacts with aqueous ammonium chloride to…
Answer this question and get it marked →The diagram shows one period of the Periodic Table: Li Be B C N O F Ne. Which two elements form acidic oxides? A beryllium and lithium B carbon and neon C carbon and nitrogen D…
Answer this question and get it marked →A student tests four solutions with universal indicator. Which colour identifies the solution containing the greatest concentration of OH- ions? A red B yellow C green D blue
Answer this question and get it marked →The following steps are done to prepare solid magnesium sulfate. 1 filtration 2 measurement of 20 cm3 of dilute sulfuric acid using a measuring cylinder 3 evaporation 4 addition…
Answer this question and get it marked →Which statement about the Periodic Table is correct? A All the metals in the Periodic Table are transition elements. B The halogens are elements in Group I of the Periodic Table.…
Answer this question and get it marked →Zinc is formed when zinc oxide is heated with carbon. zinc oxide + carbon - zinc + carbon monoxide Which substance is oxidised in this reaction? A carbon B carbon monoxide C zinc…
Answer this question and get it marked →Which word equation represents the rusting of iron? A iron + oxygen + water - anhydrous iron(II) hydroxide B iron + oxygen - hydrated iron(II) oxide C iron + oxygen + water -…
Answer this question and get it marked →Which option describes the electronic configurations of three different elements from the same group of the Periodic Table? A 2 ; 2,2 ; 2,8,8,2 B 2 ; 2,8 ; 2,8,2 C 2,1 ; 2,8,1 ;…
Answer this question and get it marked →Which metal forms compounds that can be used to colour glass? A aluminium B calcium C chromium D sodium
Answer this question and get it marked →Two properties of element R are listed. - It is a dark solid at room temperature. - It is a diatomic molecule. Where on the Periodic Table is R placed? A Group I B Group VII C…
Answer this question and get it marked →Four metals, W, X, Y and Z, are tested with either cold water, steam or both. The observations are: W reacts slowly with cold water; X reacts rapidly with cold water; Y does not…
Answer this question and get it marked →Which statement about the displacement reactions of the halogens is correct? A Iodine displaces bromine from aqueous sodium bromide. B Bromine displaces chlorine from aqueous…
Answer this question and get it marked →Which substances in water from natural sources are beneficial to aquatic animals? 1 metal compounds 2 plastics 3 phosphates 4 dissolved oxygen A 1 and 2 B 1 and 4 C 2 and 3 D 3…
Answer this question and get it marked →What are the products formed when glucose is fermented? A ethanol and carbon dioxide B ethanol and oxygen C ethene and carbon dioxide D ethene and oxygen
Answer this question and get it marked →Which structure represents a molecule of ethanol? (Four displayed structural formulae are shown: A is ethane CH3CH3; B is ethene CH2=CH2; C is ethanol CH3CH2OH; D is a structure…
Answer this question and get it marked →Which statement describes a homologous series? A a family of elements in the same group of the Periodic Table B a family of elements with similar chemical properties C a family of…
Answer this question and get it marked →What are the properties of aqueous ethanoic acid? (The table has three columns: decolourises aqueous bromine; reacts with calcium carbonate to make carbon dioxide; turns damp red…
Answer this question and get it marked →Four different organic compounds are separated by a fractionating column. The table shows the boiling points of the compounds: Q 69 °C, R 196 °C, S 90 °C, T 125 °C. The diagram…
Answer this question and get it marked →Which piece of apparatus is used to measure exactly 21.50 cm3 of dilute sulfuric acid? A beaker B burette C measuring cylinder D volumetric pipette
Answer this question and get it marked →Which row shows an advantage and a disadvantage for the stated apparatus used in a titration? apparatus advantage disadvantage --- --- --- --- A 25 cm3 volumetric pipette measures…
Answer this question and get it marked →Sample M contains calcium carbonate and sodium nitrate. The result of adding water to M, stirring and filtering is shown (calcium carbonate remains on the filter paper, aqueous…
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