Final answer:
A standard that is achieved under near-perfect conditions is known as a standard state, which for chemical thermodynamic properties includes 1 bar pressure and 1 molar solutions at 298.15 K.
Step-by-step explanation:
A standard that is attained only when near-perfect conditions are present is known as a standard state. In chemistry, the standard state represents a set of physical conditions that are accepted as common reference conditions for reporting thermodynamic properties. This includes a pressure of 1 bar, solutions at 1 molar concentrations, and most commonly refers to a temperature of 298.15 K.
Precision is an important factor in scientific measurements, mentioning how closely a measurement matches the same measurement when repeated. Moreover, when discussing substances, a pure substance is one that is homogeneous and has a constant composition, which is ideal for achieving precise measurements and comparisons.
While striving for these standards, it must be acknowledged that certain ideals, such as absolute zero or a perfectly ordered crystal, are practically unobtainable. Yet, these ideals serve as the basis for key scientific principles, such as the third law of thermodynamics that states the entropy of any perfectly ordered, crystalline substance at absolute zero is zero.