State function

A state function is a property of a system that depends only on its current condition, not on how it got there. Think of it like the location of a car: whether you drove directly or took a longer route, its final position stays the same. Examples include temperature, pressure, and volume. These properties are useful because they provide consistent information about a system's current state, regardless of the process used to reach that state. This means state functions simplify understanding and predicting system behavior in fields like physics and chemistry.