8.0 g of water at 30∘C30^\circ\text{C}30∘C is poured onto a large block of ice at 0∘C0^\circ\text{C}0∘C. The water cools to 0∘C0^\circ\text{C}0∘C and some of the ice melts.
Assume that all the thermal energy lost by the water is gained by the ice.
What is the mass of the ice that melts?
The specific heat capacity of water is 4.2 J/(g ∘C)4.2\text{ J/(g }^\circ\text{C)}4.2 J/(g ∘C).
The specific latent heat of fusion of ice is 336 J/g336\text{ J/g}336 J/g.
313 exam-style questions on CIE IGCSE Physics 2.2.3a Melting, boiling, condensation and solidification. Each one has a worked solution and a mark scheme showing where the marks go.