plumiCovalent bonding: Edexcel GCSE Combined Science questions
Every Edexcel GCSE Combined Science exam question on Covalent bonding (specification points 1.28–1.32), 2018–2025, with its mark scheme and examiner’s report.
Paper
All papers
Exam
All years
Calculations
Q2(b)
The whole paper ↗Q6(b)
The whole paper ↗Q5(a)(i)
The whole paper ↗Q4(d)
The whole paper ↗Q3(b)
The whole paper ↗Q1(a)
The whole paper ↗Q1(b)
The whole paper ↗Q1(c)
The whole paper ↗Q4(b)(ii)
The whole paper ↗Q5(d)
The whole paper ↗Q4(c)
The whole paper ↗Q2(c)
The whole paper ↗Q1(b)(iii)
The whole paper ↗Q3(b)(iii)
The whole paper ↗Q3(b)(iv)
The whole paper ↗Q5(e)
The whole paper ↗Q5(b)
The whole paper ↗Q2(c)(i)
The whole paper ↗Q4(a)
The whole paper ↗Q5(c)(i)
The whole paper ↗
All 20 questions on Covalent bonding, as a list
- June 2025, Chemistry Paper 2 Higher, Q2(b) (2 marks): When hydrocarbons undergo combustion, water is produced. Draw a dot and cross diagram of a molecule of water. (2)
- June 2025, Chemistry Paper 2 Foundation, Q6(b) (2 marks): When hydrocarbons undergo combustion, water is produced. Draw a dot and cross diagram of a molecule of water. (2)
- June 2024, Chemistry Paper 1 Higher, Q5(a)(i) (2 marks): A molecule of silicon tetrachloride is composed of a silicon atom and four chlorine atoms. • a silicon atom has 4 outer electrons • a chlorine atom has 7 outer
- June 2023, Chemistry Paper 1 Foundation, Q4(d) (4 marks): Sodium reacts with chlorine to form sodium chloride, which contains ionic bonds. Hydrogen reacts with chlorine to form hydrogen chloride, which contains covalen
- June 2023, Chemistry Paper 2 Higher, Q3(b) (2 marks): It is thought that small quantities of hydrogen sulfide, H2S, were also in the Earth’s early atmosphere. Draw the dot and cross diagram for a molecule of hydrog
- June 2023, Chemistry Paper 2 Foundation, Q1(a) (1 mark): The formula of a molecule of compound A is H2O. Give the formula of a molecule of compound D. (1)
- June 2023, Chemistry Paper 2 Foundation, Q1(b) (2 marks): The names of two of the compounds in Figure 1 are shown below. Draw one straight line from each name to the structure of a molecule of that compound. (2) name o
- June 2023, Chemistry Paper 2 Foundation, Q1(c) (2 marks): Figure 2 shows information about the number of electrons in the outer shell of each of the different atoms in a molecule of compound C. symbol of number of elec
- June 2023, Chemistry Paper 2 Foundation, Q4(b)(ii) (2 marks): Chlorine, Cl2 , is made of simple molecules. Describe what is meant by the term molecule. (2)
- June 2022, Chemistry Paper 1 Higher, Q5(d) (6 marks): A molecule of methane can be represented in several different ways as shown in Figure 5. These representations have been labelled A–E to assist you in your answ
- November 2021, Chemistry Paper 2 Foundation, Q4(c) (2 marks): Figure 6 shows the electron arrangement for an atom of hydrogen and an atom of oxygen. H O Figure 6 Complete the dot and cross diagram in Figure 7 for a molecul
- November 2020, Chemistry Paper 1 Higher, Q2(c) (2 marks): The electronic configuration of carbon is 2.4 The electronic configuration of oxygen is 2.6 Draw a dot and cross diagram for a molecule of carbon dioxide. Show
- November 2020, Chemistry Paper 1 Foundation, Q1(b)(iii) (1 mark): Hydrogen has one electron in its electron shell. Figure 2 shows the incomplete dot and cross diagram of a hydrogen molecule. Complete Figure 2 to show the elect
- November 2020, Chemistry Paper 2 Foundation, Q3(b)(iii) (1 mark): A chlorine atom has seven electrons in its outer shell. A hydrogen atom has one electron in its outer shell. Complete the dot and cross diagram of a molecule of
- November 2020, Chemistry Paper 2 Foundation, Q3(b)(iv) (1 mark): Name the type of bonding in a molecule of hydrogen chloride. (1)
- June 2019, Chemistry Paper 1 Foundation, Q5(e) (2 marks): An oxygen atom has six electrons in its outer shell. A hydrogen atom has one electron in its outer shell. Complete the dot and cross diagram of a molecule of wa
- June 2018, Chemistry Paper 1 Higher, Q5(b) (2 marks): Oxygen, O2, is also a simple molecular, covalent substance. Draw a dot and cross diagram for the molecule of oxygen. (2)
- June 2018, Chemistry Paper 2 Higher, Q2(c)(i) (2 marks): Describe what is meant by a covalent bond. (2)
- June 2018, Chemistry Paper 2 Foundation, Q4(a) (1 mark): State the formula of a molecule of substance B. (1)
- June 2018, Chemistry Paper 2 Foundation, Q5(c)(i) (2 marks): Describe what is meant by a covalent bond. (2)
Questions, mark schemes and examiner’s reports are © Pearson Edexcel, from their published past papers. Plumi isn’t affiliated with any exam board. Want whole papers? Full past papers.
Rather write your answers by hand on iPad? Plumi marks them against the same mark schemes.