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TEST KEEP CLOSED

THERMAL PROPERTIES OF MATTER

Thermal Expansion

Thermal Conductivity

Adiabatic Gas Law

A closed cylinder with a lever controlling the location of a piston inside is connected to a computer where three electrical signals monitor the pressure, volume, and temperature inside of the cylinder. When the piston is compressed quickly, the transition is adiabatic and there is no heat flow. The mechanical work is converted entirely into internal energy which is reflected in the temperature increase. The cylinder can be filled with air (diatomic gas) or argon (monatomic gas) to show that the ratio γ = CP/CV affects the size of the temperature rise. Since the diatomic gas stores part of the energy as rotations, its temperature increase is smaller.

Adiabatic Gas Law
Adiabatic Gas Law