Which row describes the forces between the molecules and the motion of the molecules in a gas?
Forces: strong; Motion: vibrate about fixed positions
Forces: strong; Motion: move randomly at high speed
Forces: negligible; Motion: vibrate about fixed positions
Forces: negligible; Motion: move randomly at high speed
44 exam-style questions on CIE IGCSE Physics 2.1.1 States of matter and changes of state. Each one has a worked solution and a mark scheme showing where the marks go.