When a hot object warms a cooler object, does temperature flow between them? Are the temperature changes of the two objects equal? Explain.

Temperature is the thermal state of a physical body that is not exchangeable. It is a measure of the average kinetic energy of molecules.

When a hot object warms a cooler object, the temperature does not flow between them. It is the heat energy that flows from the warmer object to the cooler object due to the difference in temperature.

In an ideal case, the amount of heat lost by the warmer object is the same as the amount of heat gained by the cooler object.

The amount of heat lost or gained by an object is

\(Q = mc\Delta T\). … (i)

Here, m is the mass, c is the specific heat, and \(\Delta T\) is the change in temperature.

Since the masses and specific heat of two objects are not equal, their temperature change is also not equal. The temperature change may be equal under certain circumstances, such as if both the bodies are made of the same material and are identical.