Define specific latent heat of fusion.
A tray of area 0.40 m20.40\text{ m}^20.40 m2, filled with ice to a depth of 15 mm15\text{ mm}15 mm, is removed from a refrigerator. Calculate the mass of ice on the tray. The density of ice is 900 kg/m3900\text{ kg/m}^3900 kg/m3.
Thermal energy from the Sun is falling on the ice at a rate of 450 W/m2450\text{ W/m}^2450 W/m2. The ice absorbs 80%80\%80% of this energy. Calculate the energy absorbed in 1.0 s1.0\text{ s}1.0 s by the 0.40 m20.40\text{ m}^20.40 m2 area of ice on the tray.
The ice is at its melting temperature. Calculate the time taken for all the ice to melt. The specific latent heat of fusion of ice is 3.3×105 J/kg3.3 \times 10^5\text{ J/kg}3.3×105 J/kg.
528 exam-style questions on CIE IGCSE Physics 2.2 Thermal properties and temperature, covering 2.2.1 Thermal expansion of solids, liquids and gases, 2.2.2a Internal energy and temperature, 2.2.2b Specific heat capacity, 2.2.3a Melting, boiling, condensation and solidification, 2.2.3b Evaporation, and 2.2.3c Cooling by evaporation. Each one has a worked solution and a mark scheme showing where the marks go.