A block of ice at 0 ∘C0\ ^\circ\text{C}0 ∘C is put into a warm room. The ice melts. While the ice is melting, its temperature stays at 0 ∘C0\ ^\circ\text{C}0 ∘C.
Explain why the internal energy of the ice increases while it is melting, even though its temperature does not change.
All the ice melts and the water then warms up to room temperature.
Describe what happens to the kinetic energy store of the particles while the water warms up.
40 exam-style questions on AQA GCSE Physics 3.2 Internal energy and energy transfers, covering 3.2.1 Internal energy, 3.2.2 Temperature changes in a system and specific heat capacity, and 3.2.3 Changes of state and specific latent heat. Each one has a worked solution and a mark scheme showing where the marks go.