Compare the arrangement and motion of the molecules in ice (solid) and in liquid water.
An outdoor decorative pond has a surface area of 600 m2600\text{ m}^2600 m2. During a cold night, a layer of ice of thickness 0.050 m0.050\text{ m}0.050 m forms on the surface. The density of ice is 920 kg/m3920\text{ kg/m}^3920 kg/m3.
Calculate the mass of the ice layer on the pond.
The ice is at 0∘C0^\circ\text{C}0∘C. To form this ice layer, water at 0∘C0^\circ\text{C}0∘C on the surface of the pond was frozen. 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. Calculate the energy removed from the water to freeze it into ice at 0∘C0^\circ\text{C}0∘C.
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.