Chemistry NECO Syllabus

Below is the 2026 NECO Chemistry Syllabus for both internal and external candidates.

Aims and Objectives

The syllabus is designed to enable candidates to:

• acquire knowledge of the fundamental principles and concepts of chemistry.

• develop practical and experimental skills in chemistry.

• understand the role of chemistry in industry, agriculture, medicine, and everyday life.

• develop problem-solving and analytical abilities through chemical investigations.

• appreciate the importance of scientific methods and accurate observations.

• understand the relationship between chemistry and other sciences.

• develop skills in interpreting chemical data and equations.

• apply chemical knowledge to environmental and technological issues.

Scheme of Examination

There will be three papers, Paper I, Paper II, and Paper III, all of which must be taken.

Paper I

Will consist of fifty multiple-choice objective questions covering all aspects of the syllabus.

Duration: 1 hour
Marks: 50

Paper II

Will consist of essay and structured questions.

Candidates will be required to answer questions from different sections of the syllabus.

Duration: 2 hours 30 minutes
Marks: 100

Paper III

Will consist of practical chemistry questions or practical test alternatives where applicable.

Duration: 1 hour 30 minutes
Marks: 50

Detailed Chemistry Syllabus

INTRODUCTION TO CHEMISTRY

Nature of Chemistry

• Meaning of chemistry

• Branches of chemistry

• Importance of chemistry

Scientific Methods

• Observation

• Experimentation

• Measurement

• Data interpretation

PARTICULATE NATURE OF MATTER

Matter

• Definition of matter

• States of matter

• Properties of solids, liquids, and gases

Kinetic Theory

• Molecular explanation of matter

• Diffusion

• Brownian motion

ATOMIC STRUCTURE

The Atom

• Structure of the atom

• Protons

• Neutrons

• Electrons

Atomic Number and Mass Number

• Isotopes

• Electronic configuration

Modern Atomic Theory

• Atomic models

• Energy levels

CHEMICAL COMBINATIONS

Elements, Compounds and Mixtures

• Definitions

• Differences

• Examples

Separation Techniques

• Filtration

• Distillation

• Sublimation

• Chromatography

• Crystallization

CHEMICAL SYMBOLS, FORMULAE AND EQUATIONS

Chemical Symbols

• Writing symbols correctly

Chemical Formulae

• Empirical formula

• Molecular formula

Chemical Equations

• Writing equations

• Balancing equations

STOICHIOMETRY

Mole Concept

• Relative atomic mass

• Relative molecular mass

• Molar mass

Calculations

• Mole calculations

• Percentage composition

• Empirical formula calculations

Gas Laws

• Boyle's law

• Charles' law

• Combined gas law

KINETIC THEORY AND GAS LAWS

Gas Behaviour

• Gas properties

• Kinetic molecular theory

Gas Laws

• Applications

• Calculations

PERIODIC TABLE

Periodic Classification

• Periods

• Groups

Periodic Properties

• Atomic radius

• Ionization energy

• Electronegativity

Representative Elements

• Group I elements

• Group II elements

• Group VII elements

• Group VIII elements

CHEMICAL BONDING

Electrovalent Bonding

• Ionic compounds

• Properties

Covalent Bonding

• Formation

• Properties

Metallic Bonding

• Characteristics

• Applications

AIR

Composition of Air

• Oxygen

• Nitrogen

• Carbon dioxide

• Noble gases

Air Pollution

• Sources

• Effects

• Control measures

WATER

Sources of Water

• Natural sources

• Water cycle

Properties of Water

• Physical properties

• Chemical properties

Water Treatment

• Purification

• Softening of water

SOLUBILITY

Solutions

• Solute

• Solvent

Solubility

• Factors affecting solubility

• Solubility curves

ACIDS, BASES AND SALTS

Acids

• Properties

• Uses

Bases

• Properties

• Uses

Salts

• Preparation of salts

• Classification of salts

Indicators

• Litmus

• Methyl orange

• Phenolphthalein

pH Scale

• Acidity

• Alkalinity

OXIDATION AND REDUCTION

Oxidation

• Definition

• Oxidizing agents

Reduction

• Definition

• Reducing agents

Redox Reactions

• Applications

ELECTROLYSIS

Electrolytes and Non-Electrolytes

• Definitions

• Examples

Electrolysis Process

• Faraday's laws

• Applications

ENERGY CHANGES

Exothermic Reactions

• Examples

• Applications

Endothermic Reactions

• Examples

• Applications

CHEMICAL EQUILIBRIUM

Reversible Reactions

• Dynamic equilibrium

Factors Affecting Equilibrium

• Temperature

• Pressure

• Concentration

RATES OF REACTION

Factors Affecting Reaction Rates

• Temperature

• Concentration

• Pressure

• Catalysts

• Surface area

NON-METALS AND THEIR COMPOUNDS

Hydrogen

• Preparation

• Properties

• Uses

Oxygen

• Preparation

• Properties

• Uses

Nitrogen

• Preparation

• Properties

• Uses

Chlorine

• Preparation

• Properties

• Uses

METALS AND THEIR COMPOUNDS

Sodium

• Properties

• Uses

Calcium

• Properties

• Uses

Aluminium

• Extraction

• Uses

Iron

• Extraction

• Rusting

• Prevention of rusting

Copper

• Properties

• Uses

ORGANIC CHEMISTRY

Introduction to Organic Chemistry

• Hydrocarbons

• Homologous series

Alkanes

• Properties

• Uses

Alkenes

• Properties

• Uses

Alkynes

• Properties

• Uses

Alcohols

• Preparation

• Uses

Carboxylic Acids

• Properties

• Uses

Petroleum

• Fractional distillation

• Products of petroleum

CHEMISTRY AND INDUSTRY

Industrial Processes

• Haber process

• Contact process

Chemical Industries

• Fertilizer industry

• Soap industry

• Cement industry

ENVIRONMENTAL CHEMISTRY

Pollution

• Air pollution

• Water pollution

• Soil pollution

Environmental Protection

• Waste management

• Recycling

PRACTICAL CHEMISTRY

Laboratory Apparatus

• Identification

• Uses

Experimental Techniques

• Titration

• Filtration

• Crystallization

• Distillation

Qualitative Analysis

• Identification of ions

• Identification of gases

Quantitative Analysis

• Volumetric analysis

• Calculations

Key Areas Frequently Tested in NECO Chemistry

• Atomic Structure

• Periodic Table

• Chemical Bonding

• Mole Concept and Stoichiometry

• Acids, Bases and Salts

• Solubility

• Oxidation and Reduction

• Electrolysis

• Rates of Reaction

• Chemical Equilibrium

• Metals and Their Compounds

• Organic Chemistry

• Industrial Chemistry

• Air and Water

• Practical Chemistry

• Qualitative Analysis

These topics form the core of the NECO Chemistry examination and usually account for the majority of objective, theory, and practical questions. Students should focus on understanding chemical principles, mastering calculations, learning chemical equations, practicing laboratory techniques, and solving past questions regularly to achieve excellent results in the examination.