A beaker containing melting paraffin wax at its melting point of 37∘C37^\circ\text{C}37∘C is placed on a digital hotplate. In the same laboratory, a flask of water is boiling at 100∘C100^\circ\text{C}100∘C over a Bunsen burner. What is happening to the temperature of the melting wax and the temperature of the boiling water?
Both temperatures are constant.
The temperature of the melting wax is constant, and the temperature of the boiling water is increasing.
The temperature of the melting wax is increasing, and the temperature of the boiling water is constant.
Both temperatures are 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.