Physics 0625 · IGCSE · Kinetic particle model of matter

Kinetic particle model of matter — practice question

(a(i))[1]

Describe how the molecules move in a solid.

(a(ii))[2]

Describe how the molecules move in a gas.

(b)[4]

Explain, using momentum, how the molecules produce pressure on the walls of the container.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Molecules vibrate about fixed positions” …