Elements, compounds and mixtures — Paper 2 · IGCSE Science - Combined 0653

15 Which statement describes a mixture? A It contains molecules made from the same type of atom. B It contains only one type of atom. C It contains two different types of atom joined by chemical bonds. D It contains two different types of atom that can be separated by physical processes.

1 marks

Answer: D

This question in 0653/21 May/June 2017

15 A mixture contains hydrogen, helium, neon and oxygen. What describes this mixture? A elements and compounds B elements only C molecules and compounds D molecules only

1 marks

Answer: B

This question in 0653/22 May/June 2017

24 What is an alloy? A a compound containing two metallic elements B a compound containing two non-metallic elements C a mixture containing two metallic elements D a mixture containing two non-metallic elements

1 marks

Answer: C

This question in 0653/22 May/June 2017

14 The formulae of three substances are shown. substance formula methane CH4 water H2O oxygen O2 Which statement is correct? A Methane is made from five different types of atom. B Methane, water and oxygen are molecules. C Only methane and water are molecules. D Oxygen is made from two different types of atom.

1 marks

Answer: B

This question in 0653/21 Oct/Nov 2017

14 The formulae of three substances are shown. substance formula methane CH4 water H2O oxygen O2 Which statement is correct? A Methane is made from five different types of atom. B Methane, water and oxygen are molecules. C Only methane and water are molecules. D Oxygen is made from two different types of atom.

1 marks

Answer: B

This question in 0653/22 Oct/Nov 2017

14 The formulae of three substances are shown. substance formula methane CH4 water H2O oxygen O2 Which statement is correct? A Methane is made from five different types of atom. B Methane, water and oxygen are molecules. C Only methane and water are molecules. D Oxygen is made from two different types of atom.

1 marks

Answer: B

This question in 0653/23 Oct/Nov 2017

14 Which statement about atoms and molecules is correct? A Atoms gain or lose electrons to become molecules. B Atoms of the same element contain the same number of molecules. C Molecules are the simplest unit of an atom. D Molecules contain atoms which are covalently bonded.

1 marks

Answer: D

This question in 0653/22 Feb/March 2018

15 Which diagram represents a mixture of two elements? A B C D

1 marks

Answer: B

This question in 0653/22 Feb/March 2018

14 The diagrams represent different substances. P Q R S T Which row describes the substances? only separate mixture of atoms only molecules atoms and molecules A P Q S B Q T R C T P R D T Q P

1 marks

Answer: A

This question in 0653/21 May/June 2018

14 The diagrams represent different substances. P Q R S T Which row describes the substances? only separate mixture of atoms only molecules atoms and molecules A P Q S B Q T R C T P R D T Q P

1 marks

Answer: A

This question in 0653/22 May/June 2018

14 The diagrams represent different substances. P Q R S T Which row describes the substances? only separate mixture of atoms only molecules atoms and molecules A P Q S B Q T R C T P R D T Q P

1 marks

Answer: A

This question in 0653/23 May/June 2018

14 The diagram shows apparatus used for filtration. Why can sugar and salt not be separated by using this apparatus? A They are both compounds. B They are both white. C They both dissolve in water. D They both have the same size particles.

1 marks

Answer: C

This question in 0653/21 May/June 2019

14 A molecule of hydrogen has the formula H2. A molecule of a protein contains several different elements. Which statement about these molecules is correct? A They both contain cations and anions bonded together. B They both contain different types of atom. C They both contain more than one atom bonded together. D They both contain only one type of atom.

1 marks

Answer: C

This question in 0653/22 May/June 2019

25 Which statement shows that petroleum is a mixture? A Petroleum can be burned as a fuel. B Petroleum can be separated into fractions by distillation. C Petroleum is a fossil fuel formed over millions of years. D Petroleum is a thick, black liquid.

1 marks

Answer: B

This question in 0653/22 May/June 2019

15 Which description of the named substance is correct? substance element or mixture A air mixture B brass element C carbon dioxide element D hydrogen chloride mixture

1 marks

Answer: A

This question in 0653/23 May/June 2019

25 Which statement shows that petroleum is a mixture? A Petroleum can be burned as a fuel. B Petroleum can be separated into fractions by distillation. C Petroleum is a fossil fuel formed over millions of years. D Petroleum is a thick, black liquid.

1 marks

Answer: B

This question in 0653/23 May/June 2019

16 Which diagram represents a mixture of two different elements? A B C D

1 marks

Answer: D

This question in 0653/21 Oct/Nov 2019

15 A white solid X is formed when magnesium reacts with oxygen. What is X? A a compound B a mixture C an alloy D an element

1 marks

Answer: A

This question in 0653/22 Oct/Nov 2019

15 Which substance is a single compound? A air B oxygen C petroleum D water

1 marks

Answer: D

This question in 0653/23 Oct/Nov 2019

16 A mixture contains hydrogen, helium, neon and oxygen. What does this mixture contain? A elements and compounds B elements only C molecules and compounds D molecules only

1 marks

Answer: B

This question in 0653/22 Feb/March 2020

15 Salt, sand and water are stirred together in a beaker. The salt dissolves in the water. What does the beaker contain? A a mixture of a solution and a solid B a mixture of three elements C only one compound and one solid D only one compound containing three elements

1 marks

Answer: A

This question in 0653/21 May/June 2020

15 In which experiment is a compound formed? A B copper oxide filter paper + water filter funnel ink C D air aqueous hydrogen sodium chloride burning heat

1 marks

Answer: C

This question in 0653/22 May/June 2020

14 Which term describes ammonia, NH3? A element B ion C atom D molecule

1 marks

Answer: D

This question in 0653/21 Oct/Nov 2020

16 Which statement describes a mixture? A It contains molecules made from the same type of atom. B It contains only one type of atom. C It contains two different types of atom joined by chemical bonds. D It contains two different types of atom that can be separated by physical processes.

1 marks

Answer: D

This question in 0653/21 Oct/Nov 2020

15 Which statement describes a mixture? A It contains molecules made from the same type of atom. B It contains only one type of atom. C It contains two different types of atom joined by chemical bonds. D It contains two different types of atom that can be separated by physical processes.

1 marks

Answer: D

This question in 0653/22 Oct/Nov 2020

16 Which statement describes a mixture? A It contains molecules made from the same type of atom. B It contains only one type of atom. C It contains two different types of atom joined by chemical bonds. D It contains two different types of atom that can be separated by physical processes.

1 marks

Answer: D

This question in 0653/23 Oct/Nov 2020

15 Which row describes an element and a compound? element compound A contains more than contains elements one type of atom chemically combined B contains more than contains elements one type of atom mixed together C contains only one contains elements type of atom chemically combined D contains only one contains elements type of atom mixed together

1 marks

Answer: C

This question in 0653/22 Feb/March 2021

16 Which row about elements and compounds is correct? elements compounds A are metals only contain ionic or covalent bonds B are non-metals only contain covalent bonds only C are metals or non-metals contain ionic bonds only D are metals or non-metals contain ionic or covalent bonds

1 marks

Answer: D

This question in 0653/21 May/June 2021

16 Which substances are mixtures? 1 air 2 brass 3 sodium chloride A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3

1 marks

Answer: A

This question in 0653/22 May/June 2021

17 Water has the chemical formula H2O. Which statement is correct? A Pure water is a mixture because it contains hydrogen and oxygen. B Pure water is an element because it contains only one type of molecule. C Salt water is a compound because it contains salt and water. D Salt water is a mixture because it contains salt and water.

1 marks

Answer: D

This question in 0653/23 May/June 2021

23 Brass is an alloy. What is brass? A a compound containing two metallic elements B a compound containing two non-metallic elements C a mixture containing two metallic elements D a mixture containing two non-metallic elements

1 marks

Answer: C

This question in 0653/22 Oct/Nov 2021

23 Brass is an alloy. What is brass? A a compound containing two metallic elements B a compound containing two non-metallic elements C a mixture containing two metallic elements D a mixture containing two non-metallic elements

1 marks

Answer: C

This question in 0653/23 Oct/Nov 2021

15 What describes a solvent? A a solid that dissolves in a liquid B the amount of solid that dissolves in a liquid C the liquid in which a solid dissolves D the mixture formed when a solid dissolves in a liquid

1 marks

Answer: C

This question in 0653/21 May/June 2022

15 Substance Z exists as molecules that contain only one type of atom. What is Z? A a compound B a mixture C an element D a noble gas

1 marks

Answer: C

This question in 0653/22 May/June 2022

14 The diagrams show four different mixtures of gases. Which diagram represents a mixture containing only elements? A B C D key different types of atom

1 marks

Answer: C

This question in 0653/23 May/June 2023

15 A solid is added to a liquid and stirred until the solid is no longer visible. Which word describes the type of mixture that is formed? A concentration B solute C solution D solvent

1 marks

Answer: C

This question in 0653/21 Oct/Nov 2023

14 Substance X is an element. It is a gas at room temperature. It is made of X2 molecules. Which diagram represents X? A B C D

1 marks

Answer: C

This question in 0653/22 Oct/Nov 2023

15 Which statement about tap water is correct? A It is a compound. B It is a mixture of elements. C It is a pure substance. D It is a solution.

1 marks

Answer: D

This question in 0653/22 Oct/Nov 2023

15 White solid X is formed when magnesium reacts with oxygen. What is X? A a compound B a mixture C an alloy D an element

1 marks

Answer: A

This question in 0653/22 May/June 2024

24 Which diagram represents the particles in an alloy? A B C D

1 marks

Answer: D

This question in 0653/22 May/June 2024

14 Which term describes ammonia, NH3? A atom B molecule C element D ion

1 marks

Answer: B

This question in 0653/23 May/June 2024

14 Which diagram represents a mixture of elements? A B C D

1 marks

Answer: B

This question in 0653/21 May/June 2025

14 Which diagram represents molecules of a single compound? A B C D

1 marks

Answer: D

This question in 0653/23 May/June 2025