A block of ice at 0 ∘C0\ {}^\circ\text{C}0 ∘C has a mass of 0.50 kg.
The specific latent heat of fusion of ice is 334 000 J/kg334\,000\ \text{J/kg}334000 J/kg.
Use the equation: thermal energy for a change in state=mass×specific latent heat\text{thermal energy for a change in state} = \text{mass} \times \text{specific latent heat}thermal energy for a change in state=mass×specific latent heat
How much energy is needed to melt all of the ice?
1670 J1670\ \text{J}1670 J
167 000 J167\,000\ \text{J}167000 J
334 000 J334\,000\ \text{J}334000 J
668 000 J668\,000\ \text{J}668000 J
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.