Discussion
Which property represents the amount of heat required to raise the temperature of a unit mass of a substance by one degree celsius ?
Answer: B
The property is specific heat.
Specific heat (specific heat capacity) is the heat needed to raise the temperature of unit mass of a substance by one degree, in J/(kg K). Water has a very high specific heat, about 4,186 J/(kg K), which is why oceans moderate climate.
Heat capacity is the heat needed to raise the temperature of a whole body by one degree; it depends on how much material there is, not on unit mass. Latent heat is absorbed or released during a change of state with no change of temperature. Thermal conductivity measures how readily a material conducts heat, not how much heat it stores.
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