✔ Lifetime access ✔ 9+ hours of video lessons ✔ Full A/L syllabus coverage
✔ Theory + Practice Problems + Answering guide ✔ Sinhala medium

This masterclass provides a complete step-by-step explanation of Oxidation and Reduction for A/L Chemistry in the Sinhala medium.

Oxidation and Reduction (Redox reactions) is a fundamental topic in the A/L Chemistry syllabus and appears frequently in examination questions. Many students struggle with determining oxidation numbers, balancing redox reactions, and identifying oxidizing and reducing agents.

This masterclass is designed to help students clearly understand redox concepts, accurately determine oxidation numbers, and confidently balance complex redox reactions.

Each concept is explained step-by-step with exam-focused examples to help you build strong problem-solving skills.

In this masterclass, you will learn

✔ Concept of oxidation and reduction reactions
✔ Determining oxidation numbers of elements
✔ Determining oxidation numbers using molecular structures
✔ Highest and lowest oxidation numbers of elements
✔ Classification of redox reactions
✔ Balancing half reactions
✔ Balancing overall redox reactions
✔ Identifying oxidizing and reducing agents
✔ Common oxidizing agents used in laboratories
✔ Common reducing agents used in laboratories
✔ Chemistry and reactions of hydrogen peroxide
✔ Balancing redox reactions in neutral media

Why this masterclass is important

Many A/L students try to memorize oxidation numbers and reaction balancing methods without understanding the core concepts.

This leads to:

• Mistakes when determining oxidation numbers
• Difficulty identifying oxidizing and reducing agents
• Errors while balancing redox reactions
• Confusion with laboratory oxidizing and reducing agents
• Losing marks in structured and essay questions

In this masterclass, every concept is explained from basic to advanced level, helping you confidently answer any oxidation and reduction question in the A/L Chemistry examination.