Chemical bonding — IGCSE Sciences - Co-Ordinated (0973) questions by topic
Chemical bonding questions complete a dot-and-cross diagram for methane, identify the structure of graphite, find which molecule uses all its outer-shell electrons in covalent bonds, and identify elements that form an ionic compound, worth from 1 to 8 marks in this IGCSE Co-ordinated Sciences set.
Identify, state and complete are the only top command words here: complete a dot-and-cross diagram showing outer-shell electrons only, not the full electron configuration. 10 real questions from 2023 to 2025 papers make up this page. Submit each diagram for instant marking to see immediately whether every bonding pair and lone pair is drawn where the mark scheme expects it.
May–June 2025, Paper 11
What happens to a tellurium atom when it forms a tellurium ion, Te²⁻? A It gains two electrons. B It gains two protons. C It loses two electrons. D It loses two protons.
Answer this question and get it marked →In which molecule are all the outer-shell electrons of the atoms used to form the covalent bonds? A HCl B H₂O C NH₃ D CH₄
Answer this question and get it marked →May–June 2024, Paper 11
Which elements react together to form an ionic compound? A carbon and oxygen B nitrogen and hydrogen C potassium and bromine D sodium and lithium
Answer this question and get it marked →May–June 2024, Paper 12
Which substances exist as covalent molecules? 1 helium 2 chlorine 3 sodium chloride 4 ethanol A 1 and 2 B 1 and 3 C 2 and 4 D 3 and 4
Answer this question and get it marked →Which diagram shows the structure of graphite? [Diagrams A-D: carbon structures; A = layers of hexagonal carbon rings (graphite).] A diagram A B diagram B C diagram C D diagram D
Answer this question and get it marked →May–June 2024, Paper 21
Which dot-and-cross diagram represents the outer-shell electrons in a molecule of methanol? [Diagrams A-D: methanol CH3OH dot-and-cross; A shows correct shared pairs for C-H, C-O…
Answer this question and get it marked →Which statements describe the structure of silicon(IV) oxide? 1 Each oxygen atom is attached to two silicon atoms. 2 Each oxygen atom is attached to four silicon atoms. 3 Each…
Answer this question and get it marked →May–June 2024, Paper 22
Which row describes the properties of a covalent compound? A volatility high, electrical conductivity when molten none B volatility high, conductivity high C volatility low,…
Answer this question and get it marked →May–June 2023, Paper 11
Lithium is in Group I and bromine is in Group VII of the Periodic Table. What is the formula of lithium bromide? A LiBr B LiBr2 C Li2Br D Li2Br2
Answer this question and get it marked →May–June 2023, Paper 31
Complete the dot-and-cross diagram in Fig. 8.1 to show the bonding in a molecule of methane, CH4. Show only the outer-shell electrons. (Fig. 8.1 shows a central C atom bonded to…
Answer this question and get it marked →Other IGCSE Sciences - Co-Ordinated topics
- Motion, forces and energy (77)
- Electricity and magnetism (65)
- Practical skills (60)
- Organic chemistry (40)
- Waves (40)
- Atoms, elements and compounds (29)
- Organisms and their environment (28)
- Stoichiometry (24)
- Chemical reactions (22)
- The Periodic Table (22)
- Human nutrition (21)
- Reproduction (21)