Match each thermodynamic coefficient to what it measures.

• Thermal expansivity → Fractional volume change per unit temperature at fixed pressure
• Isothermal compressibility → Fractional volume reduction per unit pressure at fixed temperature
• Pressure coefficient → Fractional pressure change per unit temperature at fixed volume
• Heat capacity → Energy needed per unit temperature rise

Each of the first three is a fractional response with one variable held fixed, and they are linked by $\alpha = \kappa_T\beta P$ because any two of $P$, $V$, $T$ determine the third. Heat capacity is an energy per degree, not a fractional response.