A container of liquid water is placed in a freezer and begins to freeze into ice at 0∘C0^\circ\text{C}0∘C. At the same time, a beaker of water is boiling at 100∘C100^\circ\text{C}100∘C on a hotplate.
What is happening to the temperature of the freezing water and what is happening to the temperature of the boiling water?
Temperature of freezing water is constant; temperature of boiling water is constant.
Temperature of freezing water is decreasing; temperature of boiling water is constant.
Temperature of freezing water is constant; temperature of boiling water is increasing.
Temperature of freezing water is decreasing; temperature of boiling water is increasing.
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.