Széles Márió, international Chemistry tutor

English-language Chemistry tuition for Cambridge IGCSE, Cambridge International AS & A Level and IB—focused on finding the real point of difficulty and building reasoning a student can use independently.

UCL
First-Class Honours
Doctoral
Medicinal-chemistry research
6 years
Verified IB Chemistry teaching
3 routes
IGCSE · AS & A Level · IB

ChemistryTutor.vn is led by Márió Széles, a UCL First-Class Honours graduate and medicinal-chemistry doctoral researcher.

The verified six years of teaching experience applies specifically to IB Chemistry SL and HL. Current Cambridge support covers Cambridge IGCSE Chemistry 0620 and Cambridge International AS & A Level Chemistry 9701 using the relevant examination-year syllabus, levels and official sources; IB experience is not presented as Cambridge teaching experience.

Teaching prioritises understanding before memorisation, deliberate practice and useful feedback. Students can learn online across Vietnam or in person in Huế, Da Nang and Hội An when the intake and public venue area are confirmed.

CORE + EXTENDED

Cambridge IGCSE Chemistry 0620

Build secure chemical foundations, then develop the practical, data and examination skills required by the student’s route.

  • Core and Supplement scope kept explicit
  • Multiple-choice, theory and practical-skills preparation
Explore programme

AS + FULL A LEVEL

Cambridge International AS & A Level Chemistry 9701

Connect advanced physical, inorganic and organic Chemistry through structured problems, evidence and practical planning.

  • Examination year fixes the syllabus version
  • Theory, data analysis and practical planning taught together
Explore programme

STANDARD + HIGHER LEVEL

IB Chemistry

Develop conceptual understanding, quantitative reasoning and assessment technique with expectations kept specific to SL or HL.

  • Six verified years teaching IB Chemistry
  • Current Structure and Reactivity framework
Explore programme

From scientific research to clearer teaching

What research experience changes in a Chemistry lesson.

Academic credentials matter only when they improve how a student understands, reasons and communicates Chemistry.

  1. Molecular structure and reaction pathways

    Students learn causal explanations rather than disconnected rules

  2. Experimental design and evidence

    Students learn to interpret unfamiliar data, practical evidence and evaluation questions

  3. Breaking research problems into testable questions

    Complex IGCSE, AS & A Level and IB questions are divided into manageable reasoning steps

  4. Scientific precision and uncertainty

    Calculations, units, assumptions and conclusions become more defensible

NH3

Hydrogen bonding

Polar N–H bonds and a lone pair allow stronger intermolecular attraction.

Why does ammonia boil at a higher temperature than phosphine?structure → forces → energy → observation
PH3

No significant hydrogen bonding

Weaker attractions between molecules require less energy to overcome.

  1. 1

    Diagnose

    Find the first misconception or method break.

  2. 2

    Understand and repair

    Rebuild the missing concept or procedure.

  3. 3

    Apply

    Use it in unfamiliar questions and data.

  4. 4

    Track

    Record errors, feedback and independence to plan what follows.

Visible progress between lessons

Students see the next step. Parents see the plan.

The learning space connects lessons, assignments, feedback and priorities so progress is visible as specific actions—not a vague promise.

Student learning space

Student view

Demonstration interface
chemistrytutor.vnStudent account · Demo

Good afternoon, Linh.

Here is what needs attention before the next lesson.

Next lessonEnergetics: Hess cyclesThu · 18:00–19:30 · Prepare Q1–4
Assignment progressEquilibrium and acids8 / 12 questions · Due Friday
Tutor feedbackEquilibrium calculation · 4 / 5Explain what Kc means, then redo part (c).
Topic progressStoichiometry secureEquilibrium is still developing
Next priorityInterpret Kc before setting up the calculation.Opening retrieval task in the next lesson
  1. 1
    Next lesson

    Topic, date and expected preparation.

  2. 2
    Assignment progress

    Questions completed and deadline.

  3. 3
    Tutor feedback

    Marks, explanation and correction action.

  4. 4
    Topic progress

    Current strengths and areas still developing.

  5. 5
    Next priority

    What the next lesson or assignment will address.

Concise and appropriate

Parent summary

Demonstration interface
chemistrytutor.vnParent summary · Demo

Current programme summary

A concise view of participation, focus and next steps.

AttendancePresent at the latest lesson
Assignment completion8 / 12 questions completed
Current topic focusEquilibrium and energetics
Upcoming scheduleThursday · 18:00–19:30
Progress summaryStoichiometry is secure; equilibrium reasoning is developing.
Next priorityInterpret the equilibrium expression before calculating.
  1. Attendance

    Included in the agreed summary.

  2. Assignment completion

    Included in the agreed summary.

  3. Current topic focus

    Included in the agreed summary.

  4. Progress summary

    Included in the agreed summary.

  5. Next priority

    Included in the agreed summary.

  6. Upcoming schedule

    Included in the agreed summary.

Demonstration account. No real student information is shown.

Teaching in Vietnam

Teaching is in English, with Vietnamese information for parents; online nationwide and in person in Huế, Da Nang and Hội An.

Professional boundaries and safety

Communication with minors follows a channel agreed with the parent. The tutor does not produce assessed work for students; AI may support the process, with human review available.