CIE IGCSE Science_Chemistry (0653 / 0654)

Cambridge IGCSE Combined & Co-ordinated Sciences Chemistry Portal

NoteCourse Portal: CIE IGCSE Science - Chemistry Component

Welcome, students! This specialized section contains study notes, targeted practice question banks (MCQ, Theory, and Alternative to Practical), and past exam papers for the Chemistry components of the Cambridge IGCSE Combined Science (0653) and Cambridge IGCSE Co-ordinated Sciences (Double Award) (0654) qualifications.

1. Course Introduction

The Chemistry component of Cambridge IGCSE Combined Science (0653) and Co-ordinated Sciences (0654) covers fundamental principles of chemistry and chemical reactions, preparing students to appreciate the technological and scientific world around them.

• Combined Science (0653): A single-award syllabus containing an equal mix of Biology, Chemistry, and Physics. It counts as a single IGCSE grade.
• Co-ordinated Sciences (0654): A double-award syllabus featuring a more detailed, double-weighted coverage of Biology, Chemistry, and Physics. It counts as two IGCSE grades.

Assessment Outline (Chemistry Components)

Candidates who have studied the Core syllabus content are entered for Paper 1 (Multiple Choice), Paper 3 (Theory) and either Paper 5 or Paper 6. Candidates who have studied the Extended syllabus content (Core + Supplement) are entered for Paper 2 (Multiple Choice), Paper 4 (Theory) and either Paper 5 or Paper 6.

Assessment Paper	Target Curriculum	Format & Duration	Marks	Syllabus Weighting
Paper 1 (Multiple Choice)	Core	40 multiple-choice questions — 45 minutes	40 marks	30%
Paper 2 (Multiple Choice)	Extended	40 multiple-choice questions — 45 minutes	40 marks	30%
Paper 3 (Theory)	Core	Short-answer and structured questions — 75 minutes	80 marks	50%
Paper 4 (Theory)	Extended	Short-answer and structured questions — 75 minutes	80 marks	50%
Paper 5 (Practical Test)	Core & Extended	Laboratory-based practical tasks — 75 minutes	40 marks	20%
Paper 6 (Alternative to Practical)	Core & Extended	Written questions on experimental skills — 60 minutes	40 marks	20%

Syllabus Structure

The Chemistry component comprises 12 major topic areas:

NoteTopic 1: States of Matter

Solids, liquids and gases; physical states; diffusion.

NoteTopic 2: Atoms, Elements & Compounds

Elements, compounds and mixtures; atomic structure; the Periodic Table; isotopes; ionic, covalent, and metallic bonding; giant structures.

NoteTopic 3: Stoichiometry

Chemical formulae; equations; relative atomic mass; the mole and the Avogadro constant.

NoteTopic 4: Electrochemistry

Electrolysis of molten compounds and aqueous solutions; electroplating; fuel cells.

NoteTopic 5: Chemical Energetics

Exothermic and endothermic reactions; energy level diagrams.

NoteTopic 6: Chemical Reactions

Physical and chemical changes; rates of reaction; reversible reactions and equilibria; redox processes.

NoteTopic 7: Acids, Bases & Salts

Acids, bases, pH; neutralisation; salt preparation; identification of ions and gases.

NoteTopic 8: The Periodic Table

Periodic trends; Group I, VII, and VIII properties; transition elements.

NoteTopic 9: Metals

Properties, alloys; reactivity series; extraction and corrosion of metals.

NoteTopic 10: Chemistry of the Environment

Water chemical analysis; fertilisers; greenhouse gases and air quality.

NoteTopic 11: Organic Chemistry

Naming, formulae; alkanes, alkenes; alcohols; polymers.

NoteTopic 12: Experimental Techniques

Apparatus; separation and purification techniques; paper chromatography.

Official Academic Resources

Download official CIE Science syllabuses and guides:

Combined Science (0653) Syllabus (2025-2027) Co-ordinated Sciences (0654) Syllabus (2025-2027)

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2. Study Lessons

Access mapped worksheets, notes, and topic question banks for each specific science pathway:

Co-ordinated Sciences (0654)

Subtopic	Syllabus Title	Revision Notes	Multiple Choice	Theory Questions	Alternative to Practical
Topic 1: States of Matter
1	States of Matter	Notes	QP MS	QP MS	N/A
Topic 2: Atoms, Elements & Compounds
2.1	Atomic Structure & the Periodic Table	Notes	QP MS	QP MS	N/A
2.2	Ions & Ionic Bonds	Notes	QP MS	QP MS	N/A
2.3	Simple Molecules & Covalent Bonds	Notes	QP MS	QP MS	N/A
2.4	Giant Structures	Notes	QP MS	QP MS	N/A
Topic 3: Stoichiometry
3.1	Formulae & Relative Masses	Notes	QP MS	QP MS	N/A
3.2	The Mole & the Avogadro Constant	Notes	QP MS	QP MS	QP MS
Topic 4: Electrochemistry
4	Electrochemistry	Notes	QP MS	QP MS	QP MS
Topic 5: Chemical Energetics
5	Exothermic & Endothermic Reactions	Notes	QP MS	QP MS	QP MS
Topic 6: Chemical Reactions
6.2	Chemical Change & Rate of Reaction	Notes	QP MS	QP MS	N/A
6.2	Redox	Notes	QP MS	QP MS	N/A
Topic 7: Acids, Bases & Salts
7.1	The Characteristic Properties of Acids & Bases	Notes	QP MS	QP MS	QP MS
7.2	Preparation of Salts	Notes	QP MS	QP MS	QP MS
Topic 8: The Periodic Table
8.1	The Periodic Table & Trends	Notes	QP MS	QP MS	N/A
8.2	Group properties and trends	Notes	QP MS	QP MS	N/A
Topic 9: Metals
9.1	Properties, Uses & Alloys of Metals	Notes	QP MS	QP MS	QP MS
9.2	Reactivity Series & Corrosion of Metals	Notes	QP MS	QP MS	QP MS
9.3	Extraction of Metals	Notes	QP MS	QP MS	QP MS
Topic 10: Chemistry of the Environment
10.1	Water & Water Pollution	Notes	QP MS	QP MS	N/A
10.2	Air quality and Climate	Notes	QP MS	QP MS	QP MS
Topic 11: Organic Chemistry
11.1	Formulae, Functional Groups & Terminology	Notes	QP MS	QP MS	QP MS
11.2	Organic Families	Notes	QP MS	QP MS	QP MS
11.3	Polymers	Notes	QP MS	QP MS	N/A
Topic 12: Experimental Techniques
12.1	Experimental Techniques	Notes	QP MS	QP MS	QP MS
12.2	Separation & Purification	Notes	QP MS	QP MS	QP MS
12.3	Identification of Ions & Gases	Notes	QP MS	QP MS	QP MS

Combined Science (0653)

Subtopic	Syllabus Title	Revision Notes	Multiple Choice	Theory Questions	Alternative to Practical
Topic 1: States of Matter
1.1	Solids, Liquids & Gases	Notes	QP MS	QP MS	N/A
Topic 2: Atoms, Elements & Compounds
2.1	Atomic Structure & the Periodic Table	Notes	QP MS	QP MS	N/A
2.2	Ions & Ionic Bonds	Notes	QP MS	QP MS	N/A
2.3	Simple Molecules & Covalent Bonds	Notes	QP MS	QP MS	N/A
Topic 3: Stoichiometry
3.1	Formulae & Equations	Notes	QP MS	QP MS	N/A
Topic 4: Electrochemistry
4.1	Electrochemistry	Notes	QP MS	QP MS	QP MS
Topic 5: Chemical Energetics
5.1	Exothermic & Endothermic Reactions	Notes	QP MS	QP MS	QP MS
Topic 6: Chemical Reactions
6.1	Chemical Change & Rate of Reaction	Notes	QP MS	QP MS	N/A
6.2	Redox	Notes	QP MS	QP MS	N/A
Topic 7: Acids, Bases & Salts
7.1	The Characteristic Properties of Acids & Bases	Notes	QP MS	QP MS	QP MS
7.2	Preparation of Salts	Notes	QP MS	QP MS	QP MS
Topic 8: The Periodic Table
8.1	The Periodic Table & Trends	Notes	QP MS	QP MS	N/A
8.2	Group Properties & Trends	Notes	QP MS	QP MS	N/A
Topic 9: Metals
9.1	Properties, Uses & Alloys of Metals	Notes	QP MS	QP MS	QP MS
9.2	Reactivity Series & Corrosion of Metals	Notes	QP MS	QP MS	QP MS
9.3	Extraction of Metals	Notes	QP MS	QP MS	QP MS
Topic 10: Chemistry of the Environment
10.1	Water & Water Pollution	Notes	QP MS	QP MS	N/A
10.2	Air Quality & Climate	Notes	QP MS	QP MS	QP MS
Topic 11: Organic Chemistry
11.1	Terminology	Notes	QP MS	QP MS	QP MS
11.2	Fuels	Notes	QP MS	QP MS	QP MS
11.3	Alkanes	Notes	QP MS	QP MS	QP MS
11.4	Alkenes	Notes	QP MS	QP MS	QP MS
11.5	Polymers	Notes	QP MS	QP MS	N/A
Topic 12: Experimental Techniques
12.1	Experimental Techniques	Notes	QP MS	QP MS	QP MS
12.2	Separation & Purification	Notes	QP MS	QP MS	QP MS
12.3	Identification of Ions & Gases	Notes	QP MS	QP MS	QP MS

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3. Practice Questions

Note

All multiple-choice, structured theory, and practical (ATP) worksheet question sets are fully integrated and mapped above under the 2. Study Lessons section. Toggle the tabs to download the question papers and marking schemes.

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4. Topical Past Paper Questions

Topical Questions Bank Coming Soon

We are currently curating and formatting the topical past paper questions for CIE IGCSE Science Chemistry. Check back soon for updates!

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5. Past Papers

Search and filter actual past exam papers. Use the quick filter bar to locate papers by syllabus code, year, component, or variant:

CIE IGCSE Science Chemistry Past Papers Search

Syllabus: 0654 (Co-ordinated) 0653 (Combined)

Year: All Years

Paper:

Variant: All Variants Variant 1 Variant 2 Variant 3

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