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CIE · IGCSE · Co-ordinated Science (Double Award)

Chemical bonding: ionic, covalent and metallic bonding
Practice Questions

20 CIE IGCSE Co-ordinated Science (Double Award) questions on Chemical bonding: ionic, covalent and metallic bonding, each with instant feedback and a full examiner-style mark scheme.

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Try 2 sample questions on Chemical bonding: ionic, covalent and metallic bonding

Question 1 · 1 mark · Difficulty 1/3

Which property is characteristic of a substance with a giant ionic lattice structure?

  1. It conducts electricity when solid and when dissolved in water
  2. It is insoluble in water because of strong ionic bonds
  3. It conducts electricity when molten or dissolved in water
  4. It has a low melting point due to weak electrostatic forces
Show answer & explanation
✓ Answer: C — It conducts electricity when molten or dissolved in water
Ionic compounds conduct electricity when molten or dissolved in water because the ions are free to move and carry charge. In the solid state, ions are held in fixed positions in the lattice and cannot move, so they do not conduct. Ionic compounds generally have high melting points due to strong electrostatic attractions, and many are soluble in water.
Question 2 · 1 mark · Difficulty 2/3

Diamond and silicon dioxide (SiO₂) are both giant covalent structures. Which statement correctly explains why both substances have very high melting points?

  1. Many strong covalent bonds throughout the structure must be broken to melt the substance
  2. Strong intermolecular forces between layers must be overcome to melt the substance
  3. Delocalised electrons hold the atoms in fixed positions within the lattice
  4. Large molecules with high relative molecular masses require more energy to move
Show answer & explanation
✓ Answer: A — Many strong covalent bonds throughout the structure must be broken to melt the substance
In giant covalent structures, every atom is covalently bonded to its neighbours throughout the entire lattice. A very large number of strong covalent bonds must be broken to melt the substance, requiring a very large amount of energy. Option B confuses molecular mass with bond strength. Option C incorrectly refers to intermolecular forces, which apply to simple molecules, not giant covalent structures. Option D describes metallic bonding, not covalent bonding.
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CIE IGCSE Co-ordinated Science (Double Award): Chemical bonding: ionic, covalent and metallic bonding FAQ

How many CIE IGCSE Co-ordinated Science (Double Award) questions on Chemical bonding: ionic, covalent and metallic bonding are there on Kramizo?
Kramizo currently has 20 exam-board-aligned practice questions on Chemical bonding: ionic, covalent and metallic bonding for CIE IGCSE Co-ordinated Science (Double Award), with new questions added every week. Each question gives you instant feedback and a full examiner-style mark scheme that tells you exactly what would earn marks on a real CIE paper. The questions span the full difficulty range — from straightforward recall (level 1) right up to multi-step reasoning and evaluation (level 3) — so the bank works for first-pass revision and final exam-week stress testing alike.
Is Kramizo free for CIE IGCSE students preparing for Co-ordinated Science (Double Award)?
Yes — completely free. Every student gets 45 questions a day on the free plan, with no card required and no trial countdown. That free quota works across every subject and every topic in our bank, so you can mix Chemical bonding: ionic, covalent and metallic bonding practice with other Co-ordinated Science (Double Award) topics or even switch to a totally different CIE subject without paying anything. Kramizo's optional Pro plan removes the daily cap and adds detailed progress analytics, but the free tier is the real product — used by thousands of GCSE, IGCSE and CSEC students.
Are the Chemical bonding: ionic, covalent and metallic bonding questions aligned to the official CIE IGCSE Co-ordinated Science (Double Award) syllabus?
Every question is written against the published CIE IGCSE Co-ordinated Science (Double Award) specification, including the exact command words (state, describe, explain, calculate, evaluate, etc.), mark allocations, and difficulty tier you'd see on a real CIE paper. Explanations are written in the style of official examiner mark schemes — they tell you what is being awarded marks and why distractors are wrong, not just whether you got it right. The bank is continually refined to match the latest syllabus updates from CIE.
How is Chemical bonding: ionic, covalent and metallic bonding typically tested on CIE IGCSE Co-ordinated Science (Double Award) papers?
Chemical bonding: ionic, covalent and metallic bonding appears across multiple question types on real CIE IGCSE Co-ordinated Science (Double Award) papers — most commonly as multiple-choice questions in the objective section, structured short-answer questions in the main paper, and occasionally as part of an extended response. Kramizo's practice bank reflects that mix: 4-option MCQs, true/false statements, fill-in-the-blank key terms, multi-select questions, and ordering questions. Working through the bank gives you exposure to every question style examiners actually use.

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