During the boiling of a pure liquid, vaporisation occurs as thermal energy is supplied. Which row in the table correctly identifies the region where this vaporisation occurs and describes the temperature change of the liquid during the process?
| Region where vaporisation occurs | Temperature of the liquid | |
|---|---|---|
| A | throughout the body of the liquid | remains constant |
| B | throughout the body of the liquid | increases |
| C | only at the surface of the liquid | remains constant |
| D | only at the surface of the liquid | increases |
throughout the body of the liquid | remains constant
throughout the body of the liquid | increases
only at the surface of the liquid | remains constant
only at the surface of the liquid | increases
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.