A scientist cools a gaseous substance until it turns into a liquid, and then into a solid.
Which row in the table describes the two changes of state of the substance as it is cooled?
| Change of state 1 | Change of state 2 | |
|---|---|---|
| A | condensing | freezing |
| B | condensing | melting |
| C | boiling | freezing |
| D | boiling | melting |
Row A
Row B
Row C
Row D
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.