An experimenter wants to calibrate a liquid-in-glass thermometer on the Celsius scale. They need to find two standard reference temperatures, known as the lower fixed point and the upper fixed point, under standard atmospheric pressure.
They have four mixtures available:
Which combination of mixtures should the experimenter use to determine the fixed points?
Mixture W for the lower fixed point and Mixture Y for the upper fixed point.
Mixture X for the lower fixed point and Mixture Y for the upper fixed point.
Mixture W for the lower fixed point and Mixture Z for the upper fixed point.
Mixture X for the lower fixed point and Mixture Z for the upper fixed point.
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.