For almost every substance the solid is denser than the liquid. Which statement explains why?
The particles in a solid are heavier than the particles in a liquid
The particles in a solid are packed more closely than in a liquid
The particles in a solid are held still so they take up less room
The particles in a solid are smaller than the particles in a liquid
40 exam-style questions on AQA GCSE Physics 3.1 Changes of state and the particle model, covering 3.1.1 Density of materials and 3.1.2 Changes of state. Each one has a worked solution and a mark scheme showing where the marks go.