What this practice covers
These questions are drawn from past CIE 0625 Physics papers and filtered to kinetic particle model of matter. You answer, you find out immediately whether you were right, and you get the reasoning for the correct option and for each distractor. Wrong answers go to a mistakes locker so you can come back to exactly those.
Practice is free. You need an account only so your progress and your mistakes are still there next time.
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What examiners see students get wrong here
These are the errors that cost marks on kinetic particle model of matter, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Saying particles in a solid do not move; they vibrate about fixed positions.
- Saying that cooling a sealed rigid container brings the particles closer together.
- Saying the temperature rises while a substance is melting or boiling.
- Confusing evaporation with boiling: evaporation happens at any temperature and only at the surface.
- Explaining Brownian motion by saying the smoke particles collide with each other.
- Saying the air molecules are visible under the microscope.
- Forgetting to add 273 when converting to kelvin.
- Explaining a pressure rise by saying the particles "expand"; particles do not change size.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Kinetic particle model of matter revision notes.