O-Level Chemistry QA Table for 6092 Paper 3

Study guide31 Oct 2025, 00:00 ZUpdated 17 Jul 2026

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Azmi·Senior Chemistry Specialist

O-Level Chemistry QA table guide for 6092 Paper 3: cation, anion, and gas tests from the supplied QA Notes, plus reagent order and observation wording.

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Fast answer for QA table searches
The O-Level Chemistry QA table for 6092 Paper 3 covers cation tests with aqueous sodium hydroxide and aqueous ammonia, anion tests with acidified reagents, and gas tests such as limewater, damp litmus paper, glowing splints, and burning splints.
Use three table columns: Reagent or test, Observation, and Inference. Write the visible change first, then the ion or gas conclusion.
SEAB's 2026 O-Level Chemistry syllabus says the Notes for Qualitative Analysis are printed in Paper 3, but candidates cannot refer to notebooks, textbooks, or other information during the practical exam.

Quick O-Level Chemistry QA table

Use this first-pass table before planning the full sequence. The goal is not to memorise random colours; it is to write test / observation / inference in the same order every time.

Test family	Reagent or test	Observation to look for	Typical inference
Cation	Add aqueous NaOH, then excess NaOH	White precipitate, soluble in excess	Aluminium or zinc ion possible
Cation	Add aqueous ammonia, then excess aqueous ammonia	Light blue precipitate, soluble in excess to form a deep blue solution	Copper(II) ion present
Cation	Add aqueous NaOH and warm	Gas turns damp red litmus paper blue	Ammonium ion present

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Practical course record and certificate note

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For SEAB private-candidate declarations, the centre record is the key evidence. Any Eclat completion document is not an MOE or SEAB qualification or accreditation.

Search intent	Use this route
`qa table` or `o level qa table`	Use the cation, anion, and gas table below, then check the official SEAB 6092 PDF because the QA Notes are printed in Paper 3.
`qualitative analysis table cations anions gas tests`	Start with inorganic QA: aqueous NaOH, aqueous ammonia, acidified barium nitrate, acidified silver nitrate, limewater, litmus paper, glowing splint, and lighted splint.
`qa notes o level`	Treat this page as a rehearsal guide, not a replacement for the official QA Notes printed in the question paper.
`qualitative organic analysis`	Use the O-Level Chemistry qualitative organic analysis drills after you have separated inorganic cation, anion, and gas tests.
`o level chemistry practical`	Use the 6092 Paper 3 practical guide for timing, marks, experiment families, Planning, MMO, PDO, and ACE.

QA route	Open next when...
6092 Paper 3 overview	You need format, marks, timing, Planning, MMO, PDO, ACE, or the full experiment-family map before doing QA.
Observation language drills	You know the test but your wording is vague or incomplete.
In-excess QA mark-trap guide	You are confusing solubility in excess reagent with calculation language about excess reactants.
Qualitative organic analysis drills	The question shifts from inorganic ions and gases to simple organic test-tube reactions.
Practical library	You need to choose between QA, titration, planning, rates, or ACE practice.

Reagent	Expected observation phrasing	Inference
Dilute NaOH	“Light blue precipitate, insoluble in excess.”	$\ce{Cu2+}$ possible.
Dilute NH3	“Light blue precipitate, soluble in excess to form deep blue solution.”	$\ce{Cu2+}$ confirmed.
Dilute HNO3, then aqueous Ba(NO3)2	“White precipitate formed.”	Sulfate $\ce{SO4^2-}$ present.
Dilute HNO3, then aqueous AgNO3	“White precipitate formed.”	Chloride $\ce{Cl^-}$ present.
Add HCl then warm	“Effervescence observed; gas forms white precipitate with limewater.”	Carbonate $\ce{CO3^2-}$ present.

O-Level Chemistry QA Table for 6092 Paper 3

Quick O-Level Chemistry QA table

Practise this in a lab

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Tie Back to the Experiments Hub

1 | Syllabus signals you must internalise

2 | Planning workflow before the stopwatch starts

3 | Observation language cheat sheet

4 | MMO and PDO habits that secure marks

5 | ACE write-up template

6 | Practice circuits for weekly drills

Sources

Quick O-Level Chemistry QA table

Practise this in a lab

If you searched for a QA table, start here

Tie Back to the Experiments Hub

1 | Syllabus signals you must internalise

2 | Planning workflow before the stopwatch starts

3 | Observation language cheat sheet

4 | MMO and PDO habits that secure marks

5 | ACE write-up template

6 | Practice circuits for weekly drills

Sources

2 | Planning workflow before the stopwatch starts

3 | Observation language cheat sheet

4 | MMO and PDO habits that secure marks

5 | ACE write-up template

6 | Practice circuits for weekly drills