May/June 2026 Paper 23

2026 · 40 questions · 40 parts · 40 marks

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3Particle Model Changes StateMedium1 mark
A syringe contains a fixed mass of gas. The plunger of the syringe is free to move. Which row describes how the distance between the particles of the gas changes when the temperature or pressure is reduced?
reduced temperaturereduced pressure
Aparticles move closer togetherparticles move closer together
Bparticles move closer togetherparticles move further apart
Cparticles move further apartparticles move closer together
Dparticles move further apartparticles move further apart