Posted in Practical

Topics Tested in Past O-Level Physics Paper 3 Practical Exam

  1. measurements of length, time interval, temperature, volume, mass and weight, current and voltage using appropriate instruments (2025, 2022, 2021, 2015)
  2. determination of the density of a liquid, or of a regularly or irregularly shaped solid which sinks in water (not tested in the last 10 years)
  3. determination of the value of the acceleration of free fall (not tested in the last 10 years outside of pendulum experiments)
  4. investigation of the effects of balanced and unbalanced forces (2022)
  5. dynamics (2019, 2017)
  6. extension of spring (2024, 2023p, 2020, 2018, 2016+p, 2014)
  7. mechanical oscillations  (2025+p, 2024, 2023, 2019+p, 2018+p)
  8. the principle of moments (2015, 2014+p)
  9. determination of the position of the centre of gravity of a plane lamina (not tested in the last 10 years)
  10. mechanical energy and power (2020+p)
  11. investigation of the factors affecting thermal energy transfer (not tested in the last 10 years)
  12. determination of heat capacities of materials (2021)
  13. latent heat of substances (not tested in the last 10 years)
  14. the law of reflection (not tested in the last 10 years)
  15. determination of the position and characteristics of an optical image formed by a plane mirror or a thin converging lens (not tested in the last 10 years)
  16. the refraction of light through glass blocks (2021+p)
  17. the principle of total internal reflection (not tested in the last 10 years)
  18. the focal length of lenses (2023, 2016)
  19. determination of the speed, wavelength and frequency of waves (not tested in the last 10 years)
  20. DC circuits (2021, 2020, 2019 (LDR), 2017 (LED)+p, 2015)
  21. potentiometer (2023, 2022, 2018, 2014)
  22. determination of the resistance of a circuit element using appropriate instruments (2025)
  23. investigation of the magnetic effect of current in a conductor (2024+p)
  24. investigation of the effects of electromagnetic induction (not tested in the last 10 years)

So what topics are most likely to be tested THIS YEAR?

DO YOU KNOW THAT THE SCIENCE PRACTICAL IS WEIGHTED TO BETWEEN 15% TO 20% OF YOUR TOTAL SCIENCE EXAM MARKS?

It can actually make a 1 to 3 grade difference in your total points for your exam! And it is easier to score a Distinction for your Science exam if you are very competent in your Science Practicals.

Right now, ARE YOU CONFIDENT that you can complete your science practical exam and answer all its questions correctly in the time allocated?

If you are looking for SCIENCE PRACTICAL TRAINING, CRASH COURSE OR MOCK EXAM PRACTICE (FOR PHYSICS, CHEMISTRY, BIOLOGY), don’t hesitate to contact us at 65694897 or 88765498.


Singapore Learner has been a One-Stop Comprehensive Science Practical Training provider since 2017.

As at 19 Apr 2026, we have trained about 1060 students for their science practical exams and we have conducted a total of about 4044 lab sessions.

Our laboratory apparatus are exam-grade and similar to those used in MOE schools and our chemicals are all NEA-approved.