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Physical Quantities, Units and Measurement
Use SI units, prefixes, vectors, apparatus readings, uncertainty, and graph conventions consistently.
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Choose a chapter or download the full set. These notes follow the 2027 K323 syllabus.
Last updated: 2026-07-17
Sitting the exam in 2027? Use K323. Sitting in 2026? Keep using the current 6091 syllabus and your school materials.
K323 is the controlling source for the 2027 Pure Physics track. Use the separate practical hub for laboratory preparation and the official syllabus for the current assessment detail.
Pure or Combined? Pure Physics K323 has 20 top-level topics. Combined Physics groups and narrows the content into 16 topics, so Combined students should use their pairing hub.
01
1
Use SI units, prefixes, vectors, apparatus readings, uncertainty, and graph conventions consistently.
02
2
Connect motion quantities, graphs, gradients, areas, and equations without assuming constant acceleration unless justified.
3
Draw a force model first, then apply resultant force, mass, acceleration, momentum, and impulse relationships.
4
Choose a pivot, use perpendicular distance, test equilibrium, and relate centre of gravity to stability.
5
Relate force and area, liquid depth and density, and pressure differences to the physical setup.
6
Track energy stores and transfers, calculate work, power, and efficiency, and state the system boundary.
03
7
Use particle spacing, motion, forces, and collisions to explain states, pressure, and changes of state.
8
Distinguish conduction, convection, and radiation, then explain the dominant transfer path in context.
9
Relate temperature, internal energy, heat capacity, and latent heat with correct units and phase-change reasoning.
04
10
Connect wave quantities and representations, then apply reflection, refraction, diffraction, and sound reasoning.
11
Order the regions, compare shared properties, and link uses and hazards to frequency and interaction.
12
Use ray diagrams, reflection, refraction, total internal reflection, and lens relationships with sign and scale checks.
05
13
Model charge transfer, attraction, repulsion, fields, induction, hazards, and discharge without confusing charge with current.
14
Relate charge flow, current, potential difference, resistance, and current-voltage behaviour.
15
Apply series and parallel rules, circuit measurements, resistance, power, and energy to a clearly labelled circuit.
16
Explain mains wiring, safety devices, power ratings, energy use, and safe household decisions.
17
Represent magnetic fields, poles, materials, and force effects with field direction kept explicit.
18
Connect current, magnetic field, force, motors, relays, and control factors using the required direction rule.
19
Identify changing flux, induced current direction, generator action, and transformer relationships.
06
20
Compare emissions, write decay changes, interpret half-life, and balance useful applications against exposure risk.
Official curriculum source: SEAB 2027 SEC G3 Physics K323 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 Physics K323 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 6091 is the 2026-and-earlier reference code. Students sitting in 2027 should use K323, 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.