Cambridge IGCSE · 0620 · Paper 1 · Multiple choice (Core)
Chemistry 0620/12 Oct/Nov 2018 past paper
Cambridge IGCSE Chemistry (0620) Paper 1 (Multiple choice (Core)), variant 2, Oct/Nov 2018: the question paper and its official mark scheme, 40 questions, with the grade thresholds. Free to open, no account needed.
- Questions
- 40
- Marks
- 40
- Grade A from
- 22
File names: 0620_w18_qp_12 · 0620_w18_ms_12
Grade thresholds for 0620/12 Oct/Nov 2018
The minimum raw marks Cambridge set for each grade on this component (out of 40). Thresholds change every session and variant, so always compare your score with the paper you actually sat.
| A | B | C | D | E |
|---|---|---|---|---|
| 22 | 19 | 17 | 14 | 11 |
Topics in this paper
Which syllabus chapters 0620/12 Oct/Nov 2018 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 0620/12 Oct/Nov 2018
- Question 1
A gas is heated. The pressure is kept constant. Which statement describes the behaviour of the particles in the gas? A The particles move faster and become closer together. B The particles move faster and become further apart. C The …
- Question 2
In which state does 1 dm3 of methane contain the most particles? A gas at …
- Question 3
The chromatogram obtained from four mixtures of dyes, …
- Question 4
The diagrams show four pieces of laboratory equipment. thermometer stop-clock pipette balance Which equipment is essential to find out if dissolving a salt in water is an exothermic process? balance pipette stop-clock thermometer …
- Question 5
How many neutrons are present in the atom …
- Question 6
Strontium nitrate is an ionic compound. Cyclohexane is a covalent compound. Which row describes a property of each compound? strontium nitrate cyclohexane A conducts electricity in aqueous solution low boiling point B low melting point insoluble in water C soluble …
- Question 7
Ionic bonds are formed when elements from Group I and Group VII react together. Which statement about ions or ionic compounds is not correct? A Electrons from one atom are transferred to another atom to form ions. B Group VII …
- Question 8
What is the relative formula mass of Mg(OH)2? …
- Question 9
Calcium carbonate, CaCO3, reacts with dilute hydrochloric acid to produce carbon dioxide. The equation for the reaction is shown. The relative formula mass of calcium carbonate is 100. CaCO3 + 2HCl → CaCl …
- Question 10
Concentrated hydrochloric acid and dilute sulfuric acid were electrolysed in separate experiments using carbon electrodes. Which statement is correct for both electrolysis experiments? A Chlorine gas is produced at the positive electrode. B Hydrogen gas is produced at the positive …
- Question 11
Aqueous nickel(II) sulfate is used as the electrolyte to electroplate a piece of steel with nickel. Which materials are used as the negative electrode and positive electrode? negative electrode positive electrode A carbon steel B nickel steel C platinum nickel …
- Question 12
Which substance does not use oxygen to produce heat energy? A coal B hydrogen C natural gas D uranium
- Question 13
Equal volumes and concentrations of dilute hydrochloric acid and aqueous sodium hydroxide are mixed. The temperatures of the solutions are shown. solution temperature / °C dilute hydrochloric acid 26 aqueous sodium hydroxide 26 mixture of dilute hydrochloric acid and aqueous …
- Question 14
A student heats hydrated copper(II) sulfate. The blue crystals change to a white powder. How can the student reverse this reaction? A Add anhydrous copper(II) sulfate to the white powder. B Add water to the white powder. C Cool the …
- Question 15
Which compound is written with the oxidation state (VII)? A CuSO4 B FeSO4 C Fe2(SO4)3 D KMnO4
- Question 16
Magnesium powder reacts with an excess of dilute hydrochloric acid to produce hydrogen gas. Which statements about this reaction are correct? 1 The smaller the particles of magnesium powder, the slower hydrogen is produced. 2 The higher the temperature, the …
- Question 17
In which row are the oxides correctly identified? acidic basic A magnesium oxide, calcium oxide sulfur dioxide, carbon dioxide B magnesium oxide, sulfur dioxide carbon dioxide, calcium oxide C sulfur dioxide, carbon dioxide calcium oxide, magnesium oxide D sulfur dioxide, …
- Question 18
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 of an excess of solid magnesium carbonate to dilute sulfuric acid …
- Question 19
When dilute sulfuric acid is added to solid X, a colourless solution is formed and a gas is produced. What is X? A copper(II) oxide B sodium oxide C copper(II) carbonate D sodium carbonate
- Question 20
A few drops of methyl orange are added to a reaction mixture. During the reaction, a gas is produced and the methyl orange turns from red to orange. What are the reactants? A aqueous sodium hydroxide and ammonium chloride B …
- Question 21
The positions of two elements, P and Q, in the Periodic Table are shown. …
- Question 22
Elements in Group I of the Periodic Table react with water. Which row describes the products made in the reaction and the trend in reactivity of the elements? products trend in reactivity A metal hydroxide and hydrogen less reactive down …
- Question 23
The equation shows the reaction between a halogen and aqueous bromide ions. X2 + 2Br– …
- Question 24
An inert gas R is used to fill weather balloons. Which descriptions of R are correct? number of outer shell electrons in atoms of R structure of gas …
- Question 25
Four metals, W, X, Y and Z, are separately reacted with water and dilute hydrochloric acid. The results are shown. metal …
- Question 26
Part of the reactivity series is shown. potassium most reactive carbon zinc iron copper least reactive Which metal must be extracted from its ore by electrolysis? A copper B iron C potassium D zinc
- Question 27
Which statement about the uses of metals is not correct? A Aluminium is used in aircraft because of its strength and good electrical conductivity. B Copper is used in electrical wiring because of its good electrical conductivity. C Stainless steel …
- Question 28
Argon is a noble gas used to fill light bulbs. What is the approximate percentage of argon in air? …
- Question 29
The diagrams show experiments involving the rusting of iron. water boiled to remove the air water anhydrous calcium chloride to dry the air oil iron nails tube Q tube R tube P A student predicted the following results. 1 In …
- Question 30
Which statements about sulfur dioxide pollution are correct? 1 It increases the pH of rivers. 2 It damages limestone buildings. 3 It causes respiratory problems. A 1 only B 2 only C 1 and …
- Question 31
The table describes three types of water. water type source of water appearance before treatment treatment appearance after treatment P river muddy none muddy Q river muddy filtration and chlorination clear R well clear chlorination only clear Which statement is …
- Question 32
Which compound would not be used as an important part of a garden fertiliser? A Ca3(PO4)2 B KNO3 C Mg(OH)2 D (NH4)2SO4
- Question 33
Carbon dioxide and methane both contribute to climate change. Which process produces both gases? A complete combustion of natural gas B farming cattle C heating calcium carbonate D respiration
- Question 34
What is not a use of lime? A It is used as a bleach in the manufacture of wood pulp. B It is used to desulfurise flue gases. C It is used to neutralise acidic industrial waste. D It is …
- Question 35
Petroleum is a mixture of different hydrocarbons. Which process is used to separate the petroleum into groups of similar hydrocarbons? A combustion B cracking C fractional distillation D reduction
- Question 36
Which two compounds are molecules which both contain a double bond? A ethane and ethanoic acid B ethane and ethanol C ethene and ethanoic acid D ethene and ethanol
- Question 37
Which molecule does not belong to the alcohol homologous series? …
- Question 38
Ethanol can be formed by: 1 fermentation 2 reaction between steam and ethene. Which of these processes use a catalyst? …
- Question 39
Ethanoic acid is a weak acid. Which statements about ethanoic acid are correct? 1 It turns Universal Indicator purple. 2 It reacts with magnesium to form hydrogen gas. 3 It reacts with calcium carbonate to form carbon dioxide gas. 4 …
- Question 40
Which substance is a natural polymer? A ethene B glucose C nylon D protein Group The Periodic Table of Elements 1 H hydrogen 1 2 He helium 4 I II III IV V VI VII VIII 3 Li lithium 7 …
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