IGCSE Chemistry
IGCSE Chemistry Tutoring Online — Cambridge and Edexcel International Specialists
IGCSE Chemistry is widely regarded as one of the most demanding subjects at the international secondary level. It combines abstract physical chemistry concepts with a significant body of inorganic factual content and the mechanistic demands of organic chemistry — all assessed in written examinations where precision and accuracy in terminology are directly rewarded.
From £16/hr · Cambridge & Edexcel International · Free first session
UK Specialists for International Students
Expert IGCSE Chemistry tutoring online
IGCSE Chemistry is widely regarded as one of the most demanding subjects at the international secondary level. It combines abstract physical chemistry concepts with a significant body of inorganic factual content and the mechanistic demands of organic chemistry — all assessed in written examinations where precision and accuracy in terminology are directly rewarded.
At Nexus Academy, our IGCSE Chemistry tutors are degree-educated chemists with specialist knowledge of both the Cambridge IGCSE and Edexcel International GCSE Chemistry specifications. We build programmes around each student's specific syllabus, tier, and gap profile — not generic chemistry revision.
Also available: GCSE Chemistry tutoring →
The Challenge
What makes IGCSE Chemistry challenging
IGCSE Chemistry demands three different types of thinking. Physical chemistry — covering atomic structure, bonding, energetics, equilibrium, and rates — requires mathematical and abstract reasoning. Inorganic chemistry requires systematic memorisation of the reactivity series, reactions of acids, preparation of salts, and properties of groups and periods. Organic chemistry requires students to understand and draw structural formulae and reaction pathways.
IGCSE Chemistry examinations also reward precision of language. A correct but vaguely stated answer — describing an observation as "a colour change" rather than specifying the colour — will not score the mark. This precision is a learnable skill, but it requires deliberate practice with mark schemes and specific feedback on terminology, not general chemistry study.
Our Approach
How Nexus IGCSE Chemistry tutors work
We map the student's knowledge against their specific syllabus — Cambridge IGCSE or Edexcel International GCSE — and identify the strongest and weakest areas. Physical chemistry calculations, organic reaction mechanisms, inorganic recall — each requires different preparation strategies, and we build programmes that address each appropriately.
Sessions combine concept teaching, calculation practice, and past-paper question work. Practical knowledge — experimental procedures, safety measures, observations — is covered explicitly, since it is assessed in written papers as well as practical components. Students receive written feedback on their answers using real mark schemes throughout the programme.
94%
of Nexus Academy students hit their target grade or band score
Syllabus Coverage
Every IGCSE Chemistry topic, covered in depth
All content is aligned to the student's specific exam board — Cambridge IGCSE or Edexcel International GCSE — and their tier (Core or Extended).
Physical Chemistry
- Atomic structure and periodic table
- Chemical bonding (ionic, covalent, metallic)
- Stoichiometry and moles
- Energy changes (exothermic, endothermic)
- Rates of reaction and equilibrium
Inorganic Chemistry
- Reactivity series and metals
- Reactions of acids and bases
- Preparation of salts
- Group properties (Group 1, Group 7)
- Industrial processes (Haber, Contact, electrolysis)
Organic Chemistry
- Alkanes and alkenes
- Ethanol production and uses
- Carboxylic acids and esters
- Polymers (addition, condensation)
- Organic reaction pathways
Practical Skills
- Identification tests (cations, anions, gases)
- Experimental procedures
- Titration calculations
- Chromatography
- Observations and conclusions
Calculations
- Relative formula mass and moles
- Percentage yield and purity
- Concentration and volume calculations
- Electrolysis calculations
- Empirical and molecular formulae
Exam Technique
- Precise observation language
- Extended response structure
- Data response and graph work
- Core vs Extended tier strategy
- Past-paper practice
Cambridge IGCSE Chemistry syllabus — the complete topic list
Cambridge IGCSE Chemistry (syllabus code 0620) was updated for examinations from 2023 onwards. Students sitting the new specification are examined on the following topic areas across Core and Extended tiers:
Cambridge IGCSE Chemistry 0620 topics
- The particulate nature of matter
- Experimental techniques
- Atoms, elements and compounds
- Stoichiometry
- Electricity and chemistry
- Chemical energetics
- Chemical reactions
- Acids, bases and salts
- The Periodic Table
- Metals
- Air and water
- Sulfur
- Carbonates
- Organic chemistry
The revised 2023 specification places greater emphasis on application and data analysis questions at Extended level. Students sitting Paper 2 (Extended theory) and Paper 4 (Extended theory) are expected to apply their knowledge to unfamiliar contexts — which is why past paper practice is built into every Nexus programme from the outset.
The IGCSE Chemistry topics that trip students up most consistently
Stoichiometry (Topic 4)
Mole calculations, relative formula mass, and percentage yield are the topics most commonly cited by students as the ones they find impossible. They are not impossible — but they require a systematic method taught from first principles. Nexus tutors spend dedicated sessions on stoichiometry until the method is reliable.
Electrolysis (Topic 5)
Students frequently confuse the products at each electrode and the conditions that determine them. Electrolysis questions appear in almost every Cambridge IGCSE Chemistry paper and carry significant marks. Our tutors ensure students can confidently predict and explain electrode products for any given electrolyte.
Organic chemistry (Topic 14)
The naming, structures, and reactions of alkanes, alkenes, alcohols, and carboxylic acids — and the conditions required for each reaction — are a consistent source of lost marks. Students who learn organic chemistry as a connected system of reactions perform significantly better than those who memorise each reaction type in isolation.
Rates of reaction and chemical energetics
Understanding how and why reaction rates change, and how to read and interpret energy profile diagrams, distinguishes students who achieve A and A* from those who plateau at B and C.
How Cambridge IGCSE Chemistry is examined
Cambridge IGCSE Chemistry 0620 is assessed across three papers for Extended candidates: Paper 2 (theory, 1hr 15min), Paper 4 (theory, 1hr 15min), and Paper 6 (alternative to practical, 1hr). Understanding what each paper tests — and how marks are awarded — is central to how Nexus tutors prepare students.
Paper 2 and Paper 4 — written theory
Both papers include multiple-choice style structured questions and extended writing questions. The Extended papers specifically include questions that require students to apply their knowledge — for example, predicting the products of a reaction between unfamiliar substances using the principles they have learned, or interpreting experimental data in an unfamiliar context.
Paper 6 — alternative to practical
This paper tests students on experimental skills without them actually performing experiments. Questions ask about apparatus, method, identification of variables, recording of data, and analysis of results. Students who have been taught the required practicals in depth — and understand why each step of the procedure is done — consistently score higher on Paper 6. This is covered in every Nexus IGCSE Chemistry programme.
The precision requirement
Chemistry examiners at IGCSE level are precise about terminology. "The reaction speeds up" will not score marks where "the rate of reaction increases" is required. Our tutors train students to write answers in the correct scientific language from early in their preparation — because imprecise answers are the single most common source of avoidable mark loss.
International Exam Board Specialists
Cambridge IGCSE and Edexcel International GCSE Chemistry — expert coverage of both
Cambridge IGCSE and Edexcel International GCSE have different specifications and mark scheme conventions. Your tutor knows both.
Cambridge IGCSE Chemistry (0620)
Cambridge IGCSE Chemistry assesses through two written papers (or three for Extended candidates) covering the full syllabus. The Extended tier includes additional content on energetics, organic chemistry mechanisms, and advanced industrial processes. Our tutors know the Cambridge syllabus in detail and understand the mark scheme conventions that distinguish A and A* answers.
Edexcel International GCSE Chemistry
Edexcel IGCSE Chemistry uses a 9–1 grading system and assesses through two written papers. The specification has some differences in topic sequence and depth compared to Cambridge. Our tutors are familiar with the Edexcel International GCSE Chemistry specification and its specific assessment style.
Inside a Session
What an IGCSE Chemistry lesson with Nexus looks like
Sessions are one-to-one and structured around the student's syllabus, tier, and specific gaps. A typical lesson opens with a past paper question or calculation the student found difficult, works through the underlying concept or calculation method in detail, and closes with a fresh practice question to consolidate the learning.
Calculation work uses the shared digital whiteboard so each step can be written out and checked in real time. Written answers receive mark scheme feedback. Students are assigned specific practice questions between sessions to build the recall and calculation fluency that IGCSE Chemistry papers require.
“Chemistry was my child's weakest subject and the exam was approaching fast. Four weeks of Nexus sessions turned it around — she gained a full grade in her Cambridge IGCSE.”
Common Questions
Frequently asked questions about IGCSE Chemistry tutoring
Still have questions? We're happy to help.
Start Today
Book a free IGCSE Chemistry demo lesson
Your tutor will confirm your child's syllabus, assess their current level, and build a plan. No payment required.
Book a Free Demo LessonFrom £16/hr · No commitment · Free first session
Prefer WhatsApp? Message us directly →