is: any property of a system that is entirely determined at any time by the state of the system at that time. In particular, it does not depend on the processes which brought the system to that state. [P7.3, P7.4]
is exemplified: by the internal energy 
of a fixed quantity of ideal gas, which is determined by the temperature of the gas at any time (provided the gas is in equilibrium). Thus, changes in internal energy are determined by changes in temperature (one of the thermodynamic coordinates that specify the state) irrespective of the processes that bring them about. [P7.3, P7.4]
is NOT exemplified: by the heat 
supplied to a fixed quantity of ideal gas. The heat required to bring about a particular change of state will generally depend on the exact process involved, not just the initial and final states. [P7.3, P7.4]
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