This quantity is classically three times Boltzmann's constant for any crystal, but that breaks down when the temperature is less than the Debye temperature, when the law of Dulong and Petit for this fails. For an ideal gas, the isochoric form is given by the number of molecular degrees of freedom times Boltzmann's constant over two. It can be defined as the rate at which the temperature of a body 
This quantity is classically three times Boltzmann's constant for any crystal, but that breaks down when the temperature is less than the Debye temperature, when the law of Dulong and Petit for this fails. For an ideal gas, the isochoric form is given by the number of molecular degrees of freedom times Boltzmann's constant over two. It can be defined as the rate at which the temperature of a body changes when energy is added. For 10 points, name this amount of energy required to raise a body's temperature by one degree.
This quantity is classically three times Boltzmann's constant for any crystal, but that breaks down when the temperature is less than the Debye temperature, when the law of Dulong and Petit for this fails.
the {heat capacity} [prompt on {specific heat capacity} or {C} or C-p or C-v]