Step-by-Step Laboratory Practicals for IB, IGCSE & GCSE Science
Welcome to Practical Science — a free library of over 100 detailed laboratory practicals, study guides and revision resources for secondary school science students and teachers. Whether you are preparing for your IB Diploma, Edexcel IGCSE or GCSE exams, you will find clear instructions to help you succeed.
Most Popular Practicals
Iron Tablet Titration
Redox titration to find iron content using KMnO₄
pH and Enzyme Activity
IGCSE prescribed practical with catalase
Esterification and Equilibrium
Determine the equilibrium constant at different temperatures
Food Tests Practical
Test for starch, glucose, protein and fat
Winkler Method (BOD)
Measure dissolved oxygen in water samples
Reactivity Series
Reactions of metals with dilute acids
IGCSE Prescribed Practicals
Complete step-by-step guides for every Edexcel IGCSE prescribed practical, with methods, safety notes, model data and analysis.
Biology
View all IGCSE prescribed practicals →
Browse Practicals by Subject
Chemistry (73 practicals)
Titrations, chromatography, rates of reaction, electrolysis, enthalpy, organic chemistry and more. Covering IB Diploma, IGCSE and GCSE specifications.
Biology (21 practicals)
Osmosis, enzyme experiments, microscopy, food tests, photosynthesis, microbiology and ecology. Aligned to IB, IGCSE and GCSE syllabuses.
Physics (25 practicals)
Electricity, waves, mechanics, radioactivity, optics, sound and thermal physics. Step-by-step guides for IB, IGCSE and GCSE students.
Free IB Chemistry 2025 Online Textbook
A comprehensive, interactive online textbook covering the entire IBDP Chemistry 2025 syllabus. Structure 1–3 and Reactivity 1–3 with learning outcomes, practice questions and answers — completely free.
Open the IB Chemistry Textbook →
IB Internal Assessment Help
Preparing your IB Chemistry IA? These guides will help you choose a topic, structure your investigation and score full marks.
10 Golden Rules for Your IA
How to choose the right topic and score highly
How to Write the Perfect IA
Complete guide from topic selection to evaluation
Full Marks in Conclusion Evaluation
Step-by-step guide to the assessment criteria
For Teachers
Study Skills & Exam Prep
Help your students succeed with our guides on science essay writing, revision techniques, and IB IA topic ideas.
Downloadable Resources
Ready-made lesson packs with PowerPoints, worksheets, homework sheets and mark schemes for Edexcel IGCSE and IB Diploma Chemistry and Biology.
Revision Tools
IGCSE Chemistry Flashcards
Quizlet links for every topic
IGCSE Biology Flashcards
Quizlet links for every topic
IGCSE Physics Flashcards
Quizlet links for every topic
10 Best Revision Websites
Top free resources for IGCSE/GCSE
Latest Posts
- Determining Water of Crystallization in Copper(II) SulfateDetermine the number of moles of water of crystallisation in hydrated copper(II) sulfate by heating to constant mass. Classic IB, A-level and GCSE chemistry practical with full method, safety notes and calculations.
- Acid-Base Properties of Period 3 Oxides ExplainedInvestigate the acid-base properties of Period 3 oxides from sodium to sulfur. IB and A-level chemistry practical with pH measurements and full analysis.
- Understanding Aluminium’s Amphoteric Nature Through ExperimentsExplore aluminium’s amphoteric nature by converting scrap aluminium into aluminium sulfate. A-level and IB chemistry practical with step-by-step method.
- Mastering Thin Layer Chromatography (TLC) TechniquesLearn thin layer chromatography (TLC) by separating flower petal pigments. Calculate Rf values and compare solvent systems. IB and A-level chemistry practical.
Practical Science 