Terminology — Paper 1 · IGCSE Science - Combined 0653

26 Which structure shows a polymer that is also a hydrocarbon? H H A H C C H H H H H B C C H H H H H H C ... C C C C ... H H H H H Cl H Cl D ... C C C C ... H H H H

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2005

27 This description of a plastic is incomplete. To make a plastic, ……1…… of a ……2…… combine to form a long chain ……3…… . Which words correctly complete the gaps? 1 2 3 A atoms monomer polymer B atoms polymer monomer C molecules monomer polymer D molecules polymer monomer

1 marks

Answer: C

This question in 0653/12 May/June 2010

25 Which structure shows a polymer that is also a hydrocarbon? A B C D H H H H H H H H H Cl H Cl H C C H C C C C C C C C C C H H H H H H H H H H H H

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2010

26 Which structure shows a polymer that is also a hydrocarbon? A B C D H H H H H H H H H Cl H Cl H C C H C C C C C C C C C C H H H H H H H H H H H H

1 marks

Answer: C

This question in 0653/13 Oct/Nov 2010

26 The structure of a molecule is shown. H H H H H C C C C H H H H H Which term correctly describes this molecule? A hydrocarbon B monomer C petroleum D polymer

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2011

27 The structure of a molecule is shown. H H H H H C C C C H H H H H Which term correctly describes this molecule? A hydrocarbon B monomer C petroleum D polymer

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2011

25 The structure of a molecule is shown. H H H H H C C C C H H H H H Which term correctly describes this molecule? A hydrocarbon B monomer C petroleum D polymer

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2011

27 Which equation shows the complete combustion of a hydrocarbon? A C2H4 + 2O2 → 2CO + 2H2O B C2H4 + 3O2 → 2CO2 + 2H2O C C2H6O + 2O2 → 2CO + 3H2O D C2H6O + 3O2 → 2CO2 + 3H2O

1 marks

Answer: B

This question in 0653/12 May/June 2012

26 The diagram shows a molecule of ethane. key carbon atom hydrogen atom What is the molecular formula of ethane? A CH6 B CH3 C C2H4 D C2H6

1 marks

Answer: D

This question in 0653/13 May/June 2013

27 Which statement describes a hydrocarbon? A a compound that burns to form carbon dioxide and hydrogen B a compound that contains carbon and hydrogen only C a compound that only contains ionic bonds D a compound that reacts easily with metals

1 marks

Answer: B

This question in 0653/11 May/June 2014

27 Which statement describes a hydrocarbon? A a compound that burns to form carbon dioxide and hydrogen B a compound that contains carbon and hydrogen only C a compound that only contains ionic bonds D a compound that reacts easily with metals

1 marks

Answer: B

This question in 0653/12 May/June 2014

26 Which statement describes a hydrocarbon? A a compound that burns to form carbon dioxide and hydrogen B a compound that contains carbon and hydrogen only C a compound that only contains ionic bonds D a compound that reacts easily with metals

1 marks

Answer: B

This question in 0653/13 May/June 2014

16 The structure of an organic compound is shown. H H H O H C C C C H H H O H What is the formula of the compound? A C3H8O2 B C4H8O C C4H8O2 D C3H7O2

1 marks

Answer: C

This question in 0653/11 May/June 2015

17 The structure of a compound is shown. H H H H H H C C C C C O H H H O H H H What is the formula of the compound? A C5H11O B C5H11O2 C C5H12O D C5H12O2

1 marks

Answer: D

This question in 0653/12 May/June 2015

17 The structure of a hydrocarbon is shown. H H C H H H H C C C H H H H What is the formula of the hydrocarbon? A C2H5 B C3H8 C C4H9 D C4H10

1 marks

Answer: D

This question in 0653/12 Oct/Nov 2015

17 The structure of a compound is shown. F H Cl H H C C C C Cl F H Cl H What is the formula of the compound? A CHCl F B C4H5Cl 2F2 C C4H5Cl 3F2 D C4H5Cl 3F

1 marks

Answer: C

This question in 0653/13 Oct/Nov 2015

27 What is the name of the type of compound containing only carbon and hydrogen? A carbohydrate B carbonate C hydrocarbon D hydroxide

1 marks

Answer: C

This question in 0653/11 May/June 2016

17 The diagram represents a molecule of propane. H H H H C C C H H H H What is the formula of propane? A C2H6 B C2H8 C C3H6 D C3H8

1 marks

Answer: D

This question in 0653/12 Oct/Nov 2017

27 Which statement about organic compounds is not correct? A An ethene molecule contains a double bond. B Molecules of ethane and ethanol contain the same number of carbon atoms. C The complete combustion of hydrocarbons produces carbon dioxide and water. D The main constituent of natural gas is ethane.

1 marks

Answer: D

This question in 0653/11 May/June 2018

27 Which statement about alkanes is correct? A Alkanes are compounds containing carbon, hydrogen and oxygen. B Alkanes are saturated hydrocarbons. C Ethane is used to make poly(ethene). D Methane is the only alkane that does not contain a double bond.

1 marks

Answer: B

This question in 0653/12 May/June 2019

27 Which statement describes a hydrocarbon? A a compound that burns to form carbon dioxide and hydrogen B a compound that contains carbon and hydrogen only C a compound that only contains ionic bonds D a compound that reacts easily with metals

1 marks

Answer: B

This question in 0653/11 Oct/Nov 2020

27 Which statement describes a hydrocarbon? A a compound that burns to form carbon dioxide and hydrogen B a compound that contains carbon and hydrogen only C a compound that only contains ionic bonds D a compound that reacts easily with metals

1 marks

Answer: B

This question in 0653/12 Oct/Nov 2020

27 Which statement describes a hydrocarbon? A a compound that burns to form carbon dioxide and hydrogen B a compound that contains carbon and hydrogen only C a compound that only contains ionic bonds D a compound that reacts easily with metals

1 marks

Answer: B

This question in 0653/13 Oct/Nov 2020

26 Which type of compound contains only carbon and hydrogen? A carbohydrate B carbonate C hydrocarbon D hydroxide

1 marks

Answer: C

This question in 0653/11 May/June 2021

26 Which type of compound contains only carbon and hydrogen? A carbohydrate B carbonate C hydrocarbon D hydroxide

1 marks

Answer: C

This question in 0653/12 May/June 2021

26 Which type of compound contains only carbon and hydrogen? A carbohydrate B carbonate C hydrocarbon D hydroxide

1 marks

Answer: C

This question in 0653/13 May/June 2021

27 Which statements about methane are correct? 1 It is the main constituent of natural gas. 2 It is generally unreactive. 3 It turns aqueous bromine colourless. 4 It contains a double covalent bond. A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2021

27 Which statement describes a saturated hydrocarbon gas but not any other gas? A It contains carbon and hydrogen atoms bonded by single covalent bonds only. B It contains carbon and hydrogen atoms only. C It burns completely to give carbon dioxide and water. D It rapidly decolourises aqueous bromine.

1 marks

Answer: A

This question in 0653/12 Feb/March 2022

27 Methane, ethane and propane are all alkanes. Their formulae are shown. methane, CH4 ethane, C2H6 propane, C3H8 Which statement is not correct? A All three compounds are hydrocarbons. B All three compounds burn. C Methane is the main constituent of natural gas. D Propane burns completely to form carbon dioxide and hydrogen.

1 marks

Answer: D

This question in 0653/13 May/June 2022

17 The molecular structures of four compounds are shown. P Q H O H H H H O H H C C C C O H H C C O C C H H H H H H H R S H H H H H O H H H C C C C O H H C C C C H H O H H H H H H Which compounds have the molecular formula C4H8O2? A P and Q B P and R C Q and S D R and S

1 marks

Answer: A

This question in 0653/13 May/June 2023

26 Decane is an alkane. Which statement about decane is correct? A It burns in air to form carbon dioxide and hydrogen. B It is an unsaturated hydrocarbon. C It only contains single C–C and C–H bonds. D It rapidly decolourises bromine water.

1 marks

Answer: C

This question in 0653/12 Oct/Nov 2023

26 Decane is an alkane. Which statement about decane is correct? A It burns in air to form carbon dioxide and hydrogen. B It is an unsaturated hydrocarbon. C It only contains single C–C and C–H bonds. D It rapidly decolourises bromine water.

1 marks

Answer: C

This question in 0653/13 Oct/Nov 2023

26 Which statement explains why alkanes are saturated compounds? A They are not very reactive. B They contain double covalent bonds. C They contain carbon and hydrogen only. D They contain only single covalent bonds.

1 marks

Answer: D

This question in 0653/12 Oct/Nov 2024

25 What is petroleum? A an alkene B a mixture of hydrocarbons C an ionic compound D the main constituent of natural gas

1 marks

Answer: B

This question in 0653/12 Oct/Nov 2025

26 The structures of molecules W, X, Y and Z are shown. H H H H H H H Cl C C C C H C C H C C H CH3 H H H H H H W X Y Z Which molecules are unsaturated hydrocarbons? A W, X and Y B W, X and Z C W and X only D Y and Z only

1 marks

Answer: C

This question in 0653/12 Oct/Nov 2025

25 What is petroleum? A an alkene B a mixture of hydrocarbons C an ionic compound D the main constituent of natural gas

1 marks

Answer: B

This question in 0653/13 Oct/Nov 2025

26 The structures of molecules W, X, Y and Z are shown. H H H H H H H Cl C C C C H C C H C C H CH3 H H H H H H W X Y Z Which molecules are unsaturated hydrocarbons? A W, X and Y B W, X and Z C W and X only D Y and Z only

1 marks

Answer: C

This question in 0653/13 Oct/Nov 2025