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Lim Wei Ling

Sec 4, Raffles Institution, Singapore

Tan Mei Ling

Mother of Sec 3 student, Singapore

Mr. Ng

Chemistry Teacher, 15 years experience

Ethan Chen

Sec 4, Anglican High School

Sarah Loh

JC1, Hwa Chong Institution

Mrs. Teo

Mother of JC2 student, Singapore

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Sec 3, Bukit Panjang Govt. High

Ryan Tan

JC2, Temasek Junior College

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Chemistry HOD, Secondary School

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Sec 4, Methodist Girls' School

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Chemistry Topics

Introduction to Chemistry

Introduction to the periodic table

Introduction to chemical formulae

Unit conversions in chemistry

Scientific notation and significant figures

The Atom

Structure of the atom

History and development of atomic theory

Electronic structure: 288 rule

Electronic structure: Subshells

Ion formation

Isotopes

The Periodic Table and Elements

History and development of the periodic table

Structure of the periodic table

Physical properties of elements in the periodic table

Periodic trends: Atomic radius

Periodic trends: Ionization energy

Periodic trends: Electronegativity

Compounds and Bonding

Introduction to bonding

Ionic and covalent bonding

Intermolecular forces

Lewis structures

Molecular geometry

Metallic bonding

Alloys

Polymers

Structure and bonding of carbon

Nanotechnology

Chemical Reactions and Groups

Introduction to chemical reactions

Balancing chemical equations

Types of chemical reactions

Phases in chemical reactions

Group 1: Alkali metals

Group 7: The halogens

Group 18: Noble gases

Stoichiometry

Introduction to stoichiometry

Moles, mass and gas calculations

Moles and molar concentration

Moles, excess and limiting reagents

Percentage yield and atom economy

Basic Organic Chemistry

Introduction to organic chemistry

Alkanes

Alkenes and unsaturated hydrocarbons

Alcohols

Haloalkanes

Benzene and aromatic compounds

Naming organic compounds and groups

Solution Chemistry

Introduction to solution chemistry and solubility

Electrical conductivity

Molarity

Polarity

Energetics, Kinetics and Reaction Rate

Introduction to kinetics

Factors affecting reaction rate

Reaction rate graphs

Enthalpy

Boltzmann distribution

Activation energy

Catalysts

Reaction mechanisms

Equilibrium

Dynamic equilibrium: Introduction

Le Chatelier's Principle

The equilibrium constant

Acid-Base Theory

Introduction to acid-base theory

Conjugate acids and bases

Strong and weak acids and bases

Autoionization of water

Acid and base dissociation constant (Ka and Kb)

Relative strengths of acids and bases

pH, pOH and antilogs

Mixing strong acids and bases

Hydrolysis

Ka and Kb calculations

Solubility Equilibria

Solubility and ion concentration

Predicting solubility of salts

Ionic equations and formulae

Separating mixtures by precipitation

The solubility product

Predicting a precipitate

Pollution and hard water treatment by precipitation

The common ion effect

Redox and Electrochemistry

Introduction to electrochemistry

Oxidation number

Half equations

Balancing redox equations

Chemical cells

Redox titrations

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Master Chemistry With Expert Video Solutions

Get instant help for any Chemistry problem. Watch clear explanations, practice with tests & boost your O-level results in 30 days. Join thousands of students improving their grades now.

📚 10,000+ video solutions

✅ 97% curriculum match

📈 12% average grade increase

🚀 30-day improvement

Proven Results

Ace Your Tests

Complex Made Simple

Chemistry Topics

Introduction to Chemistry

The Atom

The Periodic Table and Elements

Compounds and Bonding

Chemical Reactions and Groups

Stoichiometry

Basic Organic Chemistry

Solution Chemistry

Energetics, Kinetics and Reaction Rate

Equilibrium

Acid-Base Theory

Solubility Equilibria

Redox and Electrochemistry

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