This exam focus covers Exam Focus within Ionic Bonding for GCSE Chemistry. Revise Ionic Bonding in Bonding & Structure for GCSE Chemistry with 35 exam-style questions and 20 flashcards. This topic appears regularly enough that it should still be part of a steady revision cycle. It is section 13 of 16 in this topic. Treat this as a marking guide for what examiners are looking for, not just a fact list.
🎯 Exam Focus
Frequently Examined
Ionic bonding appears in almost every chemistry paper. The most common question types are:
- Draw a dot-cross diagram for a named ionic compound (NaCl, MgO, MgCl₂, CaCl₂) — 2-4 marks
- Explain why the bonding in a named compound is ionic — typically "metal + non-metal" + "electron transfer" + "electrostatic attraction" = 3 marks
- State the charge on ions formed from given elements — 1 mark each
- Compare ionic and covalent bonding — requires knowing both topics
For dot-cross diagrams: always show outer shell only, use square brackets, write the charge outside. Missing any of these costs marks.
Edexcel 1CH0: Examined in Paper 1 (1CH0/1). Edexcel questions may ask you to draw dot-and-cross diagrams for ionic compounds and explain properties from the ionic structure. "Explain why ionic compounds have high melting points" using electrostatic forces is a standard 2–3 mark question. In Edexcel-style questions, the command word "Suggest" appears frequently — use your chemistry knowledge to apply to an unfamiliar context.
Practice questions for Ionic Bonding
Which combination of elements forms an ionic compound?
Describe the structure of an ionic compound and explain why ionic compounds have high melting points. [3 marks]