A student states that a change of state is a physical change and not a chemical change. Which piece of evidence best supports this statement?
The mass of the substance does not change during the change of state
The temperature stays constant while the substance is changing state
Reversing the change produces the original substance with its properties
The particles of the substance are still moving after the change of state
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.