Chemistry resources for students taking O-Level and IGCSE examinations. Have fun learning Chemistry!
Experimental Chemistry
- Common Gases and their properties
- Common Laboratory Apparatus and their Uses
- Miscibility of liquids
- How to separate immiscible liquids using Separating Funnel
- Simple Distillation
- Fractional Distillation
- Filtration
- How to separate sand and copper(II) sulfate salt
- Paper Chromatography
Atomic Structure
- Changes in State of Matter
- Atomic Structure Basics
- How to Write Electronic Configuration of Atoms
- How to Write Nuclide Notation of Atoms
- Ions Explained
- Number of proton electron and neutron
Chemical Bonding and Structure
- Why do atoms form bonds?
- Four types of Bond Structures
- Common Ions and How to Write Chemical Formulas
- Hydrogen Dot and Cross Diagram
- Oxygen Dot and Cross Diagram
- Water Dot and Cross Diagram
- Methane Dot and Cross Diagram
- Carbon Dioxide Dot and Cross Diagram
- Sodium chloride Dot and Cross Diagram
- Magnesium chloride Dot and Cross Diagram
- Sodium oxide Dot and Cross Diagram
- Calcium oxide Dot and Cross Diagram
- Valency
- Structure of covalent molecule (Exam Qn)
- Dot and Cross Diagrams of Covalent Molecules (Exam Qn)
- Structure of covalent molecule (Exam Qn)
Chemical Calculations
- Mole Calculation
- Balancing Chemical Equations (Exam Qn)
- Avogadro’s Constant and Number of Particles (Exam Qn)
- Acid and Alkali Chemical Calculation (Exam Qn)
- Empirical Formula (Exam Qn)
Acids, Bases and Salts
- The pH Scale
- Chemical Properties of Acids
- Acid Strength
- Bases and Alkalis
- Chemical Properties of Alkalis
- Solubility of Salts
- How to prepare Copper(II) Sulfate
- How to prepare Insoluble Salts
- The Basics of Ammonia
- The Haber Process
Qualitative Analysis
- Identifying Cations with Aqueous Sodium Hydroxide, NaOH
- Identifying Cations with Aqueous Ammonia, NH₃,
- Identifying Cations Using Sodium Hydroxide, NaOH (aq) and Aqueous Ammonia, NH₃ (aq)
- Why calcium ions give no precipitate with aqueous ammonia?
- How to distinguish Lead(II) and Aluminium ions?
- Identifying Anions
- Identifying Anions (Carbonate, Chloride, Iodide, Nitrate, Sulfate)
- How to Identify Carbon Dioxide Gas in the Chemistry Laboratory (Limewater Test)
The Periodic Table
- The Periodic Table Explained (Updated)
- Group 17 / VII Halogens (Updated)
- Halogen Displacement Reactions (Updated)
- Halogen Displacement as Redox Reactions (Updated)
- Noble Gases and Transition Elements
- 40 Chemical Substances Students Should Know
- What are the features and patterns in the Periodic Table that you must know
- What do you need to know about Halogens
- Why are Group I Elements called Alkali Metals
- What is Displacement reaction| Halogens
Redox and Electrolysis
Energy Changes
- Endothermic and Exothermic Changes
- Energy Level Diagrams
- What is Activation Energy?
- Energy Profile and Energy Level Diagrams
Organic Chemistry
- Homologous Series
- Naming Organic Compounds
- Draw structures of alkanes |Full Structural Formula
- Draw structures of alkenes |Full Structural Formula
- Draw structures of alcohols |Full Structural Formula
- Draw structures of carboxylic acids |Full Structural Formula
- Addition Reactions of Alkenes
- Fermentation of Glucose
Atmosphere and Environment
- Oxides of Nitrogen – Sources and Harmful Effects
- Carbon Monoxide – Sources and Harmful Effects
- Sulfur Dioxide – Sources and Harmful Effects
- Treatment of Sulfur dioxide – Flue Gas Desulfurisation
CATEGORIES
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