IB Chemistry Help — Video Lessons & Practice
Get clear explanations for every IB Chemistry topic and build exam-ready confidence for your assessments.
Certified-Teacher Concept Videos
Every IB Chemistry lesson is taught by a certified teacher who walks you through the method step by step — so you can solve similar problems independently on your exam.
Diagnostic Assessment
A quick diagnostic pinpoints exactly which IB Chemistry topics need work, so you study smarter and spend zero time on concepts you already know.
Adaptive Practice for IB Chemistry
Practice questions adjust to your performance level, keeping every IB Chemistry session productive and building your skills at the right pace.
IB Chemistry Topics
1. Stoichiometry
2. Atomic Structure
3. Periodicity and Elements
4. Chemical Bonding
5. Enthalpy and Thermodynamics
6. Kinetics
8. Acid-Base Theory
9. Redox and Electrochemistry
Discover Our Learning Areas
Explore key subjects and start learning with interactive content.
What is IB Chemistry?
IB Chemistry is a rigorous two-year science course offered as part of the International Baccalaureate Diploma Programme, available at Standard Level (SL) and Higher Level (HL). It develops students' understanding of the physical and chemical world through both theoretical study and practical laboratory work, preparing them for university-level science across a wide range of disciplines.
The course spans topics from atomic structure and chemical bonding through to organic chemistry, equilibrium, and electrochemistry. HL students go deeper into each area and tackle additional extension content, making IB Chemistry HL one of the most respected science qualifications for UK university entry.
Is IB Chemistry harder than A-Level Chemistry?
This is one of the most common questions from students choosing their post-16 pathway. IB Chemistry HL and A-Level Chemistry are broadly comparable in difficulty, but they differ in structure. IB Chemistry is part of a broader diploma requiring students to study six subjects simultaneously, meaning time management is a significant challenge. A-Level Chemistry allows deeper specialisation over two years with a narrower focus.
Both qualifications are well regarded by UK universities. Students who thrive in IB Chemistry tend to be those who can manage breadth alongside depth and who engage actively with the internal assessment component. If you are studying IB Chemistry, consistent weekly practice and early attention to calculation-heavy topics like stoichiometry and equilibrium will serve you well throughout the course.
What practical skills does IB Chemistry develop?
IB Chemistry places a strong emphasis on practical skills alongside theoretical knowledge. Through the Internal Assessment — an independently designed laboratory investigation — students develop skills in experimental design, data collection, analysis, and scientific communication. The IA counts for 20% of the final grade, making it one of the most important single pieces of work in the course.
Beyond the IA, students build skills in handling scientific data, drawing and interpreting graphs, using uncertainty and significant figures correctly, and evaluating experimental procedures. These skills are directly tested in Paper 3 at both SL and HL and are essential for success in university science programmes.
How is IB Chemistry graded?
IB Chemistry is graded on the IB's 1–7 scale. Grades 5–7 are generally considered strong, and a grade 6 or 7 at HL is highly competitive for university applications in science, medicine, and engineering. The external examinations — Papers 1, 2, and 3 — account for 80% of the final grade. The Internal Assessment laboratory investigation accounts for the remaining 20%.
Paper 1 is multiple choice; Paper 2 covers short-answer and extended-response questions; Paper 3 tests HL extension content and practical data analysis. Strong exam technique — particularly understanding command terms like 'state', 'explain', and 'evaluate' — makes a measurable difference to final scores.
What are the most important topics to revise for IB Chemistry?
Every topic in IB Chemistry can appear on the exam, but some areas carry disproportionate weight and appear most frequently in past papers. Stoichiometry and mole calculations appear in almost every Paper 2. Equilibrium — including writing Kc expressions, performing ICE table calculations, and applying Le Chatelier's principle — is consistently examined at length. Organic chemistry, particularly reaction mechanisms at HL, requires methodical practice rather than simple memorisation.
Energetics (enthalpy cycles, bond enthalpies, Hess's law) and electrochemistry (standard electrode potentials, electrolytic cells) are also high-yield revision areas. Students who practise past-paper questions under timed conditions, rather than just reviewing notes, consistently outperform those who rely on passive revision alone.
Why StudyPug for IB Chemistry?
StudyPug is built for students who want to understand the method, not just memorise the answer. Every IB Chemistry lesson is delivered by a certified teacher who explains each concept from the ground up and shows you the reasoning behind every step — because on an IB exam, knowing why the answer works is what separates a grade 5 from a grade 7.
The platform starts with a diagnostic assessment that quickly identifies the specific IB Chemistry topics where you have gaps. Rather than working through material you already know, you go straight to the content that will move your grade. Adaptive practice then keeps every session targeted: questions adjust in difficulty as your skills develop, so you are always working at the right level.
IB Chemistry lessons on StudyPug are aligned to the IB Diploma syllabus and use practice questions based on real exam-style problems. Whether you are revising stoichiometry, working through organic mechanisms, or preparing for Paper 3, the content matches what you will actually face in your examinations.
Every subscription includes a 30-day money-back guarantee. There is no free trial — the money-back guarantee is the risk-free way to access the full platform. Free practice content is also available without a subscription, so you can start practising IB Chemistry problems today with no commitment.
What you learn — IB Chemistry curriculum coverage
StudyPug covers the full IB Chemistry syllabus at both SL and HL. Topics include:
- Stoichiometry and the mole concept
- Atomic structure and electron configuration
- Periodicity and periodic trends
- Chemical bonding and molecular geometry (VSEPR)
- Energetics and thermochemistry (enthalpy, Hess's law, bond enthalpies)
- Chemical kinetics (rate expressions, activation energy, Arrhenius equation at HL)
- Chemical equilibrium (Kc, Kp, Le Chatelier's principle, acid-base equilibria)
- Acids and bases (pH, buffer solutions, titration curves)
- Redox chemistry and electrochemistry (standard electrode potentials, electrolytic cells)
- Organic chemistry (nomenclature, functional groups, reaction mechanisms at HL)
- Measurement, data processing, and internal assessment skills
Because no validated internal topic URLs are available for this page in the current sitemap, links to individual topic pages have been omitted in line with our URL-validation policy. Browse the full IB Chemistry topic list directly on StudyPug to find the specific lesson you need.
How to use StudyPug for IB Chemistry revision
The most effective way to use StudyPug for IB Chemistry is to begin with the diagnostic assessment. It takes only a few minutes and gives you a prioritised list of topics to tackle — so your first study session is immediately targeted rather than generic.
From there, work through the certified-teacher video lessons for each topic on your list. Watch the full worked example first, then pause and try a similar problem yourself before checking the solution. This active approach — rather than passive viewing — is what builds the problem-solving instincts you need for Paper 2 and Paper 3.
Use the adaptive practice questions after each video lesson to test yourself. The difficulty adjusts to your responses, which means you progress faster and spend less time on problems that are either too easy or too hard. You can also use StudyPug's practice tests to simulate timed exam conditions, helping you develop the exam technique and time management skills that make a real difference on IB exam day.
StudyPug is available on desktop and mobile, so you can fit revision around your IB schedule — whether that is a focused hour after school or a quick ten-minute practice session on the go. All your progress is saved, so you can pick up exactly where you left off.
Start with the free practice content to get a feel for the platform, then subscribe for full access to the complete video library, diagnostic assessment, and adaptive practice. Every subscription comes with a 30-day money-back guarantee.
IB Chemistry FAQ
Unsure how StudyPug works? Need help with setting up? Check our frequently asked questions or contact us for help.
What do you learn in IB Chemistry, and what topics does it cover?
IB Chemistry covers a broad range of topics across its Standard Level (SL) and Higher Level (HL) programmes. Core topics include stoichiometry, atomic structure, periodicity, chemical bonding, energetics, kinetics, equilibrium, acids and bases, redox processes, and organic chemistry. HL students also study additional topics such as spectroscopy, advanced organic mechanisms, and further thermodynamics. The course develops both conceptual understanding and practical laboratory skills, culminating in internal assessment (IA) and written IB Diploma examinations.
What is the difference between IB Chemistry SL and IB Chemistry HL?
IB Chemistry Standard Level (SL) requires roughly 150 teaching hours and covers the core syllabus. Higher Level (HL) requires around 240 hours and adds extension material including advanced organic chemistry, spectroscopic identification, and deeper treatment of thermodynamics and equilibrium. HL exams include a more demanding Paper 3 section on the HL topics. Universities often look for HL Chemistry for science, medicine, and engineering courses, making the choice between SL and HL an important one for your university ambitions.
Is IB Chemistry hard, and where do students struggle most?
IB Chemistry is widely regarded as one of the more challenging IB subjects, particularly at HL. Students most commonly struggle with stoichiometric calculations, equilibrium (Le Chatelier's principle and Kc expressions), organic reaction mechanisms, and electrochemistry. The internal assessment also catches many students off guard with its experimental design requirements. The key is building strong fundamentals early — especially mole calculations and electron configuration — because later topics build directly on them. Consistent practice with past-paper style questions is essential for exam success.
What should I take before IB Chemistry, and what comes after it?
Before starting IB Chemistry you should be comfortable with GCSE or iGCSE Chemistry (or equivalent), including basic atomic structure, bonding, equations, and the mole concept. A solid grounding in GCSE Maths also helps with stoichiometry calculations. After IB Chemistry, strong performance opens pathways to university courses in Chemistry, Biochemistry, Medicine, Pharmacy, Chemical Engineering, and Environmental Science. Many UK universities accept IB HL Chemistry in place of A-Level Chemistry for entry to these programmes.
Is IB Chemistry on the IB Diploma exams, and how is it tested?
Yes. IB Chemistry is assessed through the IB Diploma Programme examinations. SL students sit Paper 1 (multiple choice), Paper 2 (short-answer and extended-response), and complete an Internal Assessment (IA) laboratory investigation. HL students additionally sit Paper 3, which covers HL extension topics and an option. External papers make up 80% of the final grade; the IA accounts for 20%. Exams are held in May (or November for Southern Hemisphere schools) and are marked by the IBO. StudyPug's lessons and practice are based on real exam-style questions to help you prepare effectively.
What is one of the hardest concepts in IB Chemistry, and how do you tackle it?
Chemical equilibrium — particularly writing and manipulating equilibrium expressions (Kc and Kp) and applying Le Chatelier's principle — is consistently one of the most challenging areas for IB Chemistry students. The key is to practise the logic systematically: first confirm the balanced equation, then write the correct Kc expression, then reason through how a stress shifts the position of equilibrium. Working through a wide range of exam-style questions, not just reading notes, is what builds the pattern recognition needed to handle any equilibrium question confidently in the exam.
