Heat FAQs:


Q: Is heat the amount of energy that transfers from a warmer object to a cooler one?

A: Yes.

Q: Is heat measured by its effect on the states of interacting bodies?

A: Yes, for example, by the amount of ice melted or a change in temperature.

Q: Is heat one of the forms of energy?

A: Yes.

Q: Was heat measured by changes in the states of the participating bodies?

A: Yes.

Q: Is heat measured by changes in a body of known properties?

A: Yes, for example, temperature rise, change in volume or length, or phase change, such as melting of ice.

Q: Is heat transferred between two objects or systems?

A: Yes, and the energy of the object or system's particles increases.

Q: Is heat irreversible?

A: Yes.

Q: Is heat a consequence of the microscopic motion of particles?

A: Yes.

Q: Is heat that the transfer is entirely due to disordered?

A: Yes, and microscopic action, including radiative transfer.

Q: Is heat the energy transfer associated with a disordered?

A: Yes, and microscopic action on the system, associated with jumps in occupation numbers of the energy levels of the system, without change in the values of the energy levels themselves.

Q: Is heat the heat released or absorbed by a chemical substance or a thermodynamic system during a change of state that occurs without a change in temperature?

A: Yes.

Q: Is heat a transfer quantity?

A: Yes, and is described by a transport theory, not as steadily localized kinetic energy of particles.

Q: Is heat an appropriate and natural primitive for thermodynamics was already accepted by Carnot?

A: Yes.

Q: Is heat related to the concept of entropy?

A: Yes.

Q: Is heat explained in terms of the microscopic motions and interactions of constituent particles?

A: Yes, such as electrons, atoms, and molecules.

Q: Is heat often contrasted with work: heat applies to individual particles , work applies to objects?

A: Yes, Heat involves stochastic motion equally distributed among all degrees of freedom, while work is directional, confined to one or more specific degrees of freedom.

Q: Is heat defined following Carathéodory and Born, solely as occurring other than by work or transfer of matter?

A: Yes, temperature is advisedly and deliberately not mentioned in this now widely accepted definition.

Q: Is heat defined with respect to a specific chosen state variable of the system?

A: Yes, such as pressure or volume.

Q: Is heat not a function of state?

A: Yes.

Q: Is heat conventionally written as Q for algebraic purposes?

A: Yes.

Q: Is heat considered as a derived quantity?

A: Yes.

Q: Is heat not specified directly in terms of the non-adiabatic process?

A: Yes.