During a phase change of a fixed mass of a substance, the average distance between neighboring particles increases by a factor of approximately 10. Which state change has occurred, and how does the density of the substance change?
Condensation; the density increases by a factor of approximately 101010
Melting; the density decreases by a factor of approximately 100010001000
Boiling; the density decreases by a factor of approximately 100010001000
Sublimation; the density increases by a factor of approximately 100010001000
55 exam-style questions on Edexcel GCSE Physics 14.1 Density and states of matter, covering 14.1.1 Kinetic theory and states of matter, 14.1.2 Density, and 14.1.3 Density and changes of state. Each one has a worked solution and a mark scheme showing where the marks go.