State functions

[Rafsan Rana 1A]

So heat isn't a state function but internal energy of an isolated system is a state function. What qualifies something to be, or not to be, a state function?

[Ashley Wang 4G]

State functions are defined by its current state and not dependent on the path taken to reach it.

Because heat is a transfer of energy and not an intrinsic property of the system, it is not a state function.

[Angus Wu_4G]

A state function is any function in which the value is not dependent on the path taken. If a value were dependent on its path, then it is a path function. A common example of path vs state function is like displacement vs distance traveled. You can travel 5 meters East and 5 meters West, your displacement would be zero, but your distance traveled would be 10 meters.

[SimranSangha4I]

A state function does not depend on the path taken to reach that specific value, so heat would not be considered a state function.