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Pearson Edexcel International · IGCSE · Chemistry

Free Pearson Edexcel International IGCSE Chemistry
Practice Paper

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

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What the real Pearson Edexcel International IGCSE Chemistry paper looks like

Paper 1
Objective and short-answer questions covering the breadth of the specification.
Paper 2
Structured and extended-response questions testing depth of understanding.
Total exam time varies by board and tier — typically 2.5 to 3.5 hours.
Grading: See the official board specification for the current grading scale.

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

Methane reacts with chlorine in the presence of ultraviolet light. What type of reaction is this?

  1. addition
  2. substitution
  3. polymerisation
  4. oxidation
Show answer & explanation
✓ Answer: B — substitution
Award 1 mark for identifying the reaction as substitution. A is incorrect — addition reactions occur with unsaturated compounds, not alkanes. C is incorrect — polymerisation involves joining many small molecules together. D is incorrect — while combustion is oxidation, the reaction with chlorine in UV light is substitution where hydrogen atoms are replaced by chlorine atoms.
Q2 · Difficulty 1/3

The vertical columns of the periodic table are:

  1. periods
  2. shells
  3. blocks
  4. groups
Show answer & explanation
✓ Answer: D — groups
Vertical columns are groups.
Q3 · Difficulty 1/3

Which of the following is the correct word equation for the saponification of a fat?

  1. Fat + water → glycerol + fatty acids
  2. Fat + sodium hydroxide → soap + glycerol
  3. Fat + hydrochloric acid → soap + glycerol
  4. Fat + sodium chloride → soap + water
Show answer & explanation
✓ Answer: B — Fat + sodium hydroxide → soap + glycerol
Award 1 mark for correct identification of saponification products. A is incorrect — this describes hydrolysis, not saponification, and produces fatty acids rather than soap. C is incorrect — saponification requires a strong alkali, not an acid. D is incorrect — sodium chloride is a neutral salt and cannot cause saponification.
Q4 · Difficulty 2/3

Atoms of the same element with different neutron numbers are:

  1. allotropes
  2. isotopes
  3. ions
  4. compounds
Show answer & explanation
✓ Answer: B — isotopes
Isotopes differ in neutron number.
Q5 · Difficulty 2/3

Covalent bonding involves the:

  1. transfer of electrons
  2. loss of neutrons
  3. gain of protons
  4. sharing of electrons
Show answer & explanation
✓ Answer: D — sharing of electrons
Covalent bonds share electrons.
Q6 · Difficulty 2/3

Sulfur dioxide released from burning fuels causes:

  1. clean water
  2. acid rain
  3. global cooling
  4. the ozone layer
Show answer & explanation
✓ Answer: B — acid rain
Sulfur dioxide causes acid rain.
Q7 · Difficulty 1/3

Group 1 elements are the:

  1. transition metals
  2. alkali metals
  3. halogens
  4. noble gases
Show answer & explanation
✓ Answer: B — alkali metals
Group 1 are alkali metals.
Q8 · Difficulty 2/3

Crude oil is separated into fractions by:

  1. filtration
  2. electrolysis
  3. crystallisation
  4. fractional distillation
Show answer & explanation
✓ Answer: D — fractional distillation
Crude oil is separated by fractional distillation.
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Pearson Edexcel International IGCSE Chemistry FAQ

What does the Pearson Edexcel International IGCSE Chemistry exam look like?
The Pearson Edexcel International IGCSE Chemistry exam is structured across 2 components. Paper 1: Objective and short-answer questions covering the breadth of the specification. Paper 2: Structured and extended-response questions testing depth of understanding. Total exam time varies by board and tier — typically 2.5 to 3.5 hours.
Can I download a free Pearson Edexcel International IGCSE Chemistry past paper?
Real Pearson Edexcel International past papers are published directly by Pearson Edexcel International 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 Pearson Edexcel International IGCSE Chemistry graded?
See the official board specification for the current grading scale. 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.