A cold pack contains a specialized gel that is cooled in a freezer. When applied to an injured muscle, the pack warms up, absorbing thermal energy from the body.
Which thermal capacity of the gel and which temperature increase of the pack during use will result in the most thermal energy being absorbed from the body?
Large thermal capacity, large temperature increase
Large thermal capacity, small temperature increase
Small thermal capacity, large temperature increase
Small thermal capacity, small temperature increase
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.