How does the study of heat relate to the kinetic theory of matter?

3 answers

The study of heat and its relation to fluid properties, and the performance of work upon and by fluids, is called thermodynamics. The subject can be taught using two or three laws of thermodynamics, without dealing with kinetic theory.

The kinetic theory of matter can be used to derive the laws of thermodynamics, but it deals with the collisions between molecules. It is also more powerful than thermodynamics because it can be used to derive transport properties (such as thermal conductivity, diffusion and viscosity) and it can also handle conditions in which thermodynamic equilibrium does not apply.
How does the study of heat relate to the kinetic theory of matter? (Answer in a simplified terms please)
Heat is a form of energy and energy conservation rules are part of kinetic theory.

I hope that is simple enough.