GCSE Physics – Topic 2.2 – Melting, boiling and evaporation
-- Core – | ✔ |
Describe, qualitatively, the thermal expansion of solids, liquids and gases at constant pressure. | |
Describe some of the everyday applications and consequences of thermal expansion. | |
Know that a rise in the temperature of an object increases its internal energy. | |
Describe melting and boiling in terms of energy input without a change in temperature. | |
Know the melting and boiling temperatures for water at standard atmospheric pressure. | |
Describe condensation and solidification in terms of particles. | |
Describe evaporation in terms of the escape of more-energetic particles from the surface of a liquid. | |
Know that evaporation causes cooling of a liquid. | |
-- Extended – | ✔ |
Explain, in terms of the motion and arrangement of particles, the relative order of magnitudes of the expansion of solids, liquids and gases as their temperatures rise. | |
Describe an increase in temperature of an object in terms of an increase in the average kinetic energies of all of the particles in the object. | |
Define specific heat capacity as the energy required per unit mass per unit temperature increase; recall and use the equation c = ΔE/(mΔθ). |
Describe experiments to measure the specific heat capacity of a solid and a liquid. | |
Describe the differences between boiling and evaporation. | |
Describe how temperature, surface area and air movement over a surface affect evaporation. | |
Explain the cooling of an object in contact with an evaporating liquid. |