9702 · 14.3
Specific heat capacity and specific latent heat — FAQ
Frequently asked questions for 9702 Specific heat capacity and specific latent heat. Direct answers first, then deeper explanation — then practise with marking.
What is the main difference between specific heat capacity and specific latent heat?
Specific heat capacity relates to the energy needed to change a substance's temperature without changing its state, whereas specific latent heat relates to the energy needed to change a substance's state without changing its temperature.
Why does the temperature remain constant during a phase change?
During a phase change, all the energy supplied is used to increase the potential energy of the particles by breaking or forming intermolecular bonds, rather than increasing their average kinetic energy, which is responsible for temperature.
Can water have different specific heat capacities?
Yes, the specific heat capacity of water is different depending on its state (ice, liquid water, or steam). For example, liquid water has a much higher specific heat capacity than ice or steam, meaning it requires more energy to heat up.