IGCSE Science Study Tips: Physics, Chemistry and Biology

IGCSE Science can be challenging because it combines understanding, memorisation, calculations, diagrams, experiments, and application. Whether you study Biology, Chemistry, Physics, or Combined Science, the right revision strategy can help you improve your grade.

Science success depends on knowing the syllabus, understanding key concepts, using scientific vocabulary, and practising exam questions regularly.

Use the syllabus as a checklist

The syllabus tells you exactly what you need to know. Go through it topic by topic and mark each area as confident, needs revision, or difficult.

This helps you organise revision and avoid missing important content.

Biology: learn processes clearly

Biology includes topics such as cells, enzymes, nutrition, transport, respiration, photosynthesis, reproduction, inheritance, variation, organisms, and ecology.

To revise Biology well, focus on processes. For example, do not just memorise photosynthesis. Understand the word equation, limiting factors, leaf structure, and how the process is tested experimentally.

Use diagrams to revise systems such as the heart, lungs, digestive system, nervous system, and plant transport.

Chemistry: understand reactions and patterns

Chemistry includes atomic structure, bonding, chemical reactions, acids and bases, rates of reaction, electrolysis, organic chemistry, and quantitative chemistry.

Students should practise balancing equations, writing formulas, identifying reaction types, and explaining observations.

Chemistry becomes easier when you understand patterns, such as the reactivity series, periodic table trends, and bonding properties.

Physics: practise formulas and application

Physics includes forces, motion, energy, electricity, waves, thermal physics, magnetism, radioactivity, and space physics.

Learn formulas, but also understand when and how to use them. Always write the formula, substitute values, calculate carefully, and include units.

Many Physics questions test application, so practise unfamiliar problems.

Learn scientific vocabulary

Science mark schemes often require specific terms. For Biology, words like diffusion, osmosis, enzyme, pathogen, and homeostasis must be used accurately.

For Chemistry, terms like oxidation, reduction, ionic bonding, catalyst, and neutralisation are important.

For Physics, terms like resultant force, potential difference, current, frequency, and amplitude must be clear.

Practise diagrams and graphs

Science exams often include diagrams, circuits, apparatus, biological structures, and graphs.

Practise labelling diagrams neatly and interpreting graphs accurately. Learn how to describe trends using data.

Understand practical skills

Practical questions test variables, fair testing, accuracy, reliability, safety, graph plotting, and experimental improvements.

You should know the difference between independent, dependent, and control variables.

Use past papers

Past papers help you understand common question styles and mark scheme requirements. Complete topic-wise questions first, then full papers under timed conditions.

Final advice

IGCSE Science revision should combine understanding, memorisation, calculations, diagrams, and exam practice. Use the syllabus, revise actively, practise past papers, and learn from mistakes.