A student puts 0.10 kg of ice at −10 ∘C-10\ ^{\circ}\text{C}−10 ∘C into a beaker. She heats it steadily until all of it has turned into steam at 100 ∘C100\ ^{\circ}\text{C}100 ∘C.
The specific latent heat of fusion of ice is 3.34 × 105 J/kg.
The specific latent heat of vaporisation of water is 2.26 × 106 J/kg.
Describe how the temperature changes during this process, and explain the changes in terms of energy and particles.
Include a calculation of the energy needed to melt the ice.
44 exam-style questions on OCR GCSE Physics 1.2 Changes of state, covering 1.2.1 Conservation of mass during changes of state, 1.2.2 Physical and chemical changes, 1.2.3 Heating, temperature and changes of state, 1.2.4 Specific heat capacity and specific latent heat, 1.2.5 Internal energy and temperature change, and 1.2.6 Energy transfer during a change of state. Each one has a worked solution and a mark scheme showing where the marks go.