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Sec Pure

Sec 3 and 4, O-Level 6092

Pure Chemistry foundations that make the O-Level paper feel familiar.

For Sec 3 and 4 students taking Pure Chemistry who want solid mole work, bonding and organic chemistry, and answers that score. In person at Upper Thomson.

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Who it's for

Is this class right for your child?

Students usually join us in one of these situations.

  1. 01

    Starting Sec 3

    Students meeting Chemistry as its own subject for the first time.

  2. 02

    Mole calculations

    Students who freeze at stoichiometry and want a method they can trust.

  3. 03

    Losing marks on wording

    Students whose explanations are right in idea but miss keywords.

  4. 04

    Exam year

    Sec 4 students who need full-paper practice and clear feedback.

Syllabus coverage

Every Pure Chemistry topic, in a sensible order

[PLACEHOLDER] Topic order to be confirmed by the tutors. Follows O-Level Chemistry (6092).

Matter and structure

Kinetic particle theory, Atomic structure, Chemical bonding and structure.

Quantitative chemistry

Formulae and equations, The mole and stoichiometry.

Chemical reactions

Acids, bases and salts, Redox, Electrochemistry, Energetics, Rate of reaction, Qualitative analysis.

Periodic Table and organic chemistry

Periodic trends, Metals and reactivity, Alkanes and alkenes, Alcohols and carboxylic acids, Polymers.

How lessons run

Four parts, every lesson

The same rhythm each week, so students know what to expect.

  1. 01

    Concept

    A short, clear explanation of the idea, with the why behind it.

  2. 02

    Worked practice

    We solve a question together and show how each line earns a mark.

  3. 03

    Timed questions

    Students attempt exam-style questions under time pressure.

  4. 04

    Feedback

    Marked against the mark scheme, with notes on what to change.

Worked example

What a full-mark answer looks like

One exam-style question, two answers, marked the way an examiner would.

Worked example

[PLACEHOLDER] Original exam-style question written by Chemify

Question

2.4 g of magnesium reacts with excess dilute hydrochloric acid: Mg(s) + 2HCl(aq) → MgCl₂(aq) + H₂(g). Calculate the volume of hydrogen produced at room temperature and pressure. (Aᵣ: Mg = 24; 1 mol of gas occupies 24 dm³ at r.t.p.) [3]

Weak answer

1 / 3

2.4 ÷ 24 = 0.1. Volume = 0.1 × 2 = 0.2 dm³.

  • M1Correct moles of Mg: 0.1 mol.
  • M1Uses the 2 from HCl instead of the 1 : 1 Mg : H₂ ratio.
  • A1Multiplies by 2 instead of 24 dm³ mol⁻¹; answer and units wrong.

Strong answer

3 / 3

n(Mg) = 2.4 ÷ 24 = 0.10 mol. Mole ratio Mg : H₂ = 1 : 1, so n(H₂) = 0.10 mol. Volume of H₂ = 0.10 × 24 = 2.4 dm³.

  • M1Moles of Mg shown with working.
  • M1States the 1 : 1 mole ratio from the equation.
  • A12.4 dm³ with units.

Marks follow the examiner's mark scheme: B = independent mark, M = method/reasoning, A = answer.

Your tutors

Who teaches Pure Chemistry

[PLACEHOLDER] Confirm which tutor teaches this level.

[PLACEHOLDER] Co-founder and chemistry tutor

Dave

[PLACEHOLDER] Dave teaches A-Level and Sec Pure Chemistry and likes to start every topic from why it happens before what to write.

  • [PLACEHOLDER] Degree in Chemistry
  • [PLACEHOLDER] Years of teaching experience

[PLACEHOLDER] Co-founder and chemistry tutor

Jacy

[PLACEHOLDER] Jacy teaches A-Level, Sec Pure and Combined Science Chemistry and focuses on exam technique: reading the question, planning, and writing answers examiners can mark.

  • [PLACEHOLDER] Degree in Chemistry
  • [PLACEHOLDER] Years of teaching experience
Meet the tutors

Class times

Pure Chemistry slots

Pick a slot and message us about it. [PLACEHOLDER] Times to be confirmed.

  • Saturday10:00am - 12:00pmSec PurePure ChemistryUpper Thomson · [PLACEHOLDER] Times to be confirmedAsk about this slot
  • Wednesday5:00pm - 7:00pmSec PurePure ChemistryUpper Thomson · [PLACEHOLDER] Times to be confirmedAsk about this slot
See the full schedule

FAQ

Questions about this class

Something else? Ask us on WhatsApp.

How much are the fees?

We share fees directly on WhatsApp, so we can tell you the right package for your child's level and schedule.

Ask on WhatsApp
How big are the classes?

[PLACEHOLDER] Classes are kept small so every student gets their work checked in each lesson.

Is there homework?

[PLACEHOLDER] Yes, a short set of exam-style questions each week. Tutors mark it and go through common mistakes in the next lesson.

What happens in a typical lesson?

[PLACEHOLDER] We explain the concept, work through an exam-style question together, then students try timed questions and get feedback on their answers before they leave.

All questions

Next step

Ready to try a lesson?

Message us with your child's level and we will suggest a slot. In person at Upper Thomson.