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  1. IGCSE
  3. Chemistry Edexcel

Chemistry

Spec 4CH1

Free Edexcel IGCSE Chemistry revision: 585 exam-style questions and past papers from 2019–2025 with mark schemes.

Principles of chemistry

States of matter

Elements, compounds and mixtures

Atomic structure

The Periodic Table

Chemical formulae, equations and calculations

Ionic bonding

Covalent bonding

Metallic bonding

Electrolysis

Inorganic chemistry

Group 1 (alkali metals) – lithium, sodium and potassium

Group 7 (halogens) – chlorine, bromine and iodine

Gases in the atmosphere

Reactivity series

Extraction and uses of metals

Acids, alkalis and titrations

Acids, bases and salt preparations

Chemical tests

Physical chemistry

Energetics

Rates of reaction

Reversible reactions and equilibria

Organic chemistry

Introduction

Crude oil

Alkanes

Alkenes

Alcohols

Carboxylic acids

Esters

Synthetic polymers

Assessment at a glance

AssessmentFormatDurationMarksWeighting
Chemistry Paper 1Written exam2h110 marks61.1%
Chemistry Paper 2Written exam1h 15m70 marks38.9%

Course aims & skills

Edexcel IGCSE Chemistry builds the skills examiners reward. By the end of the course you should be able to:

  • balance chemical equations and calculate reacting masses
  • apply the mole concept to reacting quantities and gas volumes
  • explain trends in the periodic table using atomic structure
  • describe and explain ionic, covalent and metallic bonding
  • plan and evaluate practical investigations safely
  • interpret graphs, tables and experimental data
  • apply knowledge to unfamiliar contexts and novel problems
  • identify unknown substances using qualitative chemical tests
  • explain rates of reaction and energy changes using particle theory

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