physicsTopic 3 · Particle Model of MatterPaper 1Grades 8–9
Which container should transport a temperature-sensitive vaccine?
Starting scenario
Container A holds 2.0 kg coolant with specific heat capacity 3900 J kg⁻¹ °C⁻¹. Container B holds 1.2 kg coolant with 5200 J kg⁻¹ °C⁻¹. Each absorbs 60 kJ. B also contains 0.20 kg phase-change material with latent heat 180 kJ kg⁻¹. Air pressure inside rises during flight.
You will work through 8 staged questions that build up the science you need. Then you will answer one big-picture question from memory, with no checklist to help you — and only afterwards will the full connection map be revealed.