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Edexcel · GCSE · Chemistry

Free Edexcel GCSE Chemistry
Practice Paper

8 mixed-difficulty practice questions in the style of real Edexcel GCSE papers — answers, mark-scheme-style explanations, and the official exam structure all on one page.

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What the real Edexcel GCSE Chemistry paper looks like

Paper 1
Approximately 1 hour 30 minutes, ~70-100 marks. Covers Topics 1-4 of the specification.
Paper 2
Approximately 1 hour 30 minutes, ~70-100 marks. Covers Topics 5-8 of the specification.
Paper 3
Where applicable — e.g. Combined Science, Languages. Includes synoptic and applied questions.
Total exam time: ~3 hours across two or three papers.
Grading: Grades: 9 (highest) to 1 (lowest), with U (ungraded). A grade of 4 is a standard pass; 5 is a strong pass.

Mini practice paper: 8 questions

Mixed-difficulty questions from across the Chemistry syllabus. Tap "Show answer" after each to check yourself.

Q1 · Difficulty 1/3

What is covalent bonding?

  1. Transfer of electrons
  2. The sharing of pairs of electrons between non-metal atoms
  3. A bond between metals
  4. Attraction between ions
Show answer & explanation
✓ Answer: B — The sharing of pairs of electrons between non-metal atoms
In covalent bonds, atoms share electron pairs to achieve full outer shells. Example: H₂ (H—H), H₂O, CO₂. Found in simple molecular and giant covalent structures.
Q2 · Difficulty 1/3

What is the test for carbon dioxide?

  1. Squeaky pop
  2. Bubble through limewater — it turns milky/cloudy
  3. Relights a glowing splint
  4. Turns litmus red
Show answer & explanation
✓ Answer: B — Bubble through limewater — it turns milky/cloudy
CO₂ + Ca(OH)₂ → CaCO₃ + H₂O. Calcium carbonate is insoluble, making the limewater appear cloudy/milky.
Q3 · Difficulty 1/3

What is ionic bonding?

  1. Sharing electrons
  2. The transfer of electrons from a metal to a non-metal, forming oppositely charged ions that attract
  3. A bond between two metals
  4. A weak intermolecular force
Show answer & explanation
✓ Answer: B — The transfer of electrons from a metal to a non-metal, forming oppositely charged ions that attract
Metals lose electrons → positive ions. Non-metals gain electrons → negative ions. Electrostatic attraction between opposite charges = ionic bond.
Q4 · Difficulty 1/3

How many electrons can the first three electron shells hold?

  1. 2, 8, 8
  2. 2, 8, 18
  3. 2, 6, 10
  4. 1, 8, 8
Show answer & explanation
✓ Answer: A — 2, 8, 8
First shell: max 2 electrons. Second shell: max 8. Third shell: max 8 (at GCSE level). Fourth shell then begins filling.
Q5 · Difficulty 1/3

What charge does a sodium ion have?

  1. 2+
  2. 1+
  3. 1−
  4. 2−
Show answer & explanation
✓ Answer: B — 1+
Sodium (Na, Group 1) loses 1 electron to form Na⁺. Group number = number of electrons lost for metals (Groups 1-3).
Q6 · Difficulty 1/3

What are the Group 7 elements called?

  1. Noble gases
  2. Halogens
  3. Alkali metals
  4. Metalloids
Show answer & explanation
✓ Answer: B — Halogens
Group 7: halogens (fluorine, chlorine, bromine, iodine, astatine). Reactive non-metals with 7 outer electrons. They exist as diatomic molecules.
Q7 · Difficulty 1/3

Why are noble gases (Group 0) unreactive?

  1. They are too heavy
  2. They have full outer electron shells, making them very stable
  3. They are radioactive
  4. They are too light
Show answer & explanation
✓ Answer: B — They have full outer electron shells, making them very stable
Noble gases have complete outer electron shells (helium: 2, others: 8). No tendency to gain, lose, or share electrons → extremely stable and unreactive.
Q8 · Difficulty 1/3

What are the Group 7 elements called?

  1. Noble gases
  2. Halogens
  3. Alkali metals
  4. Metalloids
Show answer & explanation
✓ Answer: B — Halogens
Group 7: halogens (fluorine, chlorine, bromine, iodine, astatine). Reactive non-metals with 7 outer electrons. They exist as diatomic molecules.
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Edexcel GCSE Chemistry FAQ

What does the Edexcel GCSE Chemistry exam look like?
The Edexcel GCSE Chemistry exam is structured across 3 components. Paper 1: Approximately 1 hour 30 minutes, ~70-100 marks. Covers Topics 1-4 of the specification. Paper 2: Approximately 1 hour 30 minutes, ~70-100 marks. Covers Topics 5-8 of the specification. Paper 3: Where applicable — e.g. Combined Science, Languages. Includes synoptic and applied questions. Total exam time: ~3 hours across two or three papers.
Can I download a free Edexcel GCSE Chemistry past paper?
Real Edexcel past papers are published directly by Edexcel on their official website. Kramizo doesn't redistribute copyrighted past papers, but we do generate free AI-written practice papers in the exact same style — same command words, same difficulty tier, same mark conventions. Use this practice paper as warm-up, then time yourself on official past papers before exam day.
How is Edexcel GCSE Chemistry graded?
Grades: 9 (highest) to 1 (lowest), with U (ungraded). A grade of 4 is a standard pass; 5 is a strong pass. Kramizo's practice questions are tagged with difficulty 1-3 mapping roughly to the lower, middle, and top grade boundaries you'll encounter in the real exam.