Answer is: the quantity of heat that is required to raise the sample’s temperature by 1°C (or Kelvin).
Heat capacity of a sample is expressed in units of thermal energy per degree temperature (J/K).
Heat capacity is often defined relative to a unit of mass (J/kg·K or J/g·K), prefixed with the term specific.
For example, specific heat capacity of water is 4.184 J/g·K (Cp(H₂O) = 4.184 J/g·K).
The statement that defines the heat capacity of a sample is the quantity of heat that is required to raise the sample’s temperature by 1°C (or Kelvin).
Heat capacity of a substance refers to the quantity of heat that is required to raise the temperature of the substance by 1°C or K.
The heat capacity of a substance can be measured in Jg/°C or JK/g.
The heat capacity of water molecule is 4.184 Jg/°C.
Therefore, the statement that defines the heat capacity of a sample is the quantity of heat that is required to raise the sample’s temperature by 1°C (or Kelvin).
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