19. Exercises VII

Answer the following questions:

  

 

To achieve room temperature, the ice at 273 K will absorb latent mass and kinetic energyheat and thermal energymass and thermal energyheat and kinetic energy. Water at a temperature of 273 K would absorb heat energy to achieve room temperature. Thus, water at 273 K will absorb less environmental heat energy than ice at 273 K. Hence, ice at 273 K is more effective in cooling than water at the same volumetemperaturepressurekinetic energy.

 

 

Steam will produce more severe burns than boiling water because steam has more kinetic energymelting pointheat energyboiling point than water due to its latent heat of fragmentationvaporisationdecompositioncondensation.