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Experimental Chemistry
Choose apparatus, gas collection, separations, chromatography comparisons, and purity evidence for the stated task.
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Choose a science, then open the chapter you need. These notes follow the 2027 K328 Combined Science syllabus.
Last updated: 2026-07-16
Sitting the exam in 2027? Use K328. Sitting in 2026? Keep using the current 5088 syllabus and your school materials.
K328 uses Paper 3 for Chemistry, Paper 4 for Biology, and Paper 5 for practical work drawn from both components. Confirm current details in the official master syllabus.
Combined Chemistry retains the 12 top-level labels but narrows the assessed outcomes. The reviewed 2027 component does not include the Pure Chemistry electrolysis outcomes.
01
1
Choose apparatus, gas collection, separations, chromatography comparisons, and purity evidence for the stated task.
2
Connect particle states and energy changes to atomic structure, nuclide notation, isotopes, and ion particle counts.
3
Connect ionic and covalent bonding to properties, then distinguish elements, compounds, mixtures, metals, and alloys.
02
4
Move between formulae, equations, moles, masses, gas volumes, limiting reactants, and concentration with ratios visible.
5
Use ions, pH, indicators, neutralisation, oxide classification, soil treatment, and ammonium-salt reactions.
6
Apply the official cation, anion, and gas tests through reagent, condition, observation, and inference.
7
Recognise oxidation and reduction through oxygen, hydrogen, electrons, oxidation states, and the named redox tests.
8
Use Groups 1, 17, and 18, the reactivity series, extraction, alloys, and rust prevention within Combined scope.
9
Classify exothermic and endothermic changes from energy transfer and experimental evidence.
10
Explain concentration, pressure, particle-size, and temperature effects through collisions and rate data.
03
11
Connect fuels, crude oil, cracking, alkanes, alkenes, alcohols, carboxylic acids, polyethene, and recycling.
12
Connect air composition, pollutant sources and effects, the carbon cycle, greenhouse gases, and consequences.
Combined Biology has 12 top-level topics. It does not retain standalone Excretion or Homeostasis, Co-ordination and Response topics, and Reproduction is narrower than Pure Biology.
01
1
Connect named plant and animal cell structures to their functions and to specialised-cell adaptations.
2
Explain diffusion and osmosis, then interpret tissue investigations without adding active transport.
3
Connect nutrient roles, food tests, biological synthesis, and enzyme action to evidence.
02
4
Trace digestion, absorption, hepatic portal transport, liver roles, hormones, blood-glucose control, and type 2 diabetes.
5
Connect blood, vessels, heart action, valves, double circulation, and coronary heart disease.
6
Connect gas-exchange structures, tobacco-smoke effects, respiration, and oxygen debt.
7
Distinguish infectious disease, transmission, vaccination, antibiotics, and resistance through named examples.
03
8
Link leaf and root structures, photosynthesis, xylem, phloem, transpiration, wilting, and translocation.
9
Interpret energy flow, trophic losses, ecological pyramids, carbon cycling, global warming, and mitigating action.
04
10
Connect DNA, genes, chromosomes, base pairing, and the genetic code to polypeptide sequence.
11
Relate human reproductive structures, the menstrual cycle, fertilisation, implantation, and HIV prevention.
12
Use inheritance terms, simple crosses, variation, sample size, sex determination, mutation, and mutagens.
Official curriculum source: SEAB 2027 SEC G3 Science (Chemistry, Biology) K328 syllabus. Checked 15 July 2026. Recheck codes, outcomes and assessment details before annual updates.
The focus lines are Eclat revision guidance. They are not quoted syllabus text and do not replace the official learning outcomes.
This hub maps the official 2027 SEC G3 Science (Chemistry, Biology) K328 top-level topics. The linked SEAB syllabus remains authoritative for every assessable learning outcome and paper detail.
O-Level is still familiar reader language and 5088 is the 2026-and-earlier reference code. Students sitting in 2027 should use K328, while 2026 candidates must follow their current legacy syllabus and school instructions.
Only as a national comparison. IP schools control their own sequence, depth, and assessment scope, so IP students should use the separate IP route and follow current school materials first.