In chemistry, the standard state of a material (pure substance, mixture or solution) is a reference point used to calculate its properties under different conditions. In principle, the choice of standard state is arbitrary, although the International Union of Pure and Applied Chemistry (IUPAC) recommends a conventional set of standard states for general use. IUPAC recommends using a standard pressure "p" = 10 Pa. Strictly speaking, temperature is not part of the definition of a standard state. For example, as discussed below, the standard state of a gas is conventionally chosen to be unit pressure (usually in bar) ideal gas, regardless of the temperature. However, most tables of thermodynamic quantities are compiled at specific temperatures, most commonly or, somewhat less commonly, . 

The standard state should not be confused with standard temperature and pressure (STP) for gases, nor with the standard solutions used in analytical chemistry. 

For a given material or substance, the standard state is the reference state for the material's thermodynamic state properties such as enthalpy, entropy, Gibbs free energy, and for many other material standards. The standard enthalpy change of formation for an element in its standard state is zero, and this convention allows a wide range of other thermodynamic quantities to be calculated and tabulated. The standard state of a substance does not have to exist in nature: for example, it is possible to calculate values for steam at 298.15 K and 10 Pa, although steam does not exist (as a gas) under these conditions. The advantage of this practice is that tables of thermodynamic properties prepared in this way are self-consistent. QUESTIONS:

Q1:
1. What does a standard state act as?
2. What is meant by a standard state?
3. What's the definition of a standard state?
Q2:
1. What is the use of a standard state?
2. What is a standard state used as a reference point for?
3. How are standard states used in chemistry?
Q3:
1. What field are standard states used in?
2. Which field uses standard states?
3. What discipline makes use of standard states?
Q4:
1. Is standard state the same thing as STP?
2. Can standard states be used interchangeably with STP?
3. Is standard state exactly synonymous with STP?
Q5:
1. Is it necessary for something's standard state to truly exist in nature?
2. Must the standard state of a thing veritably exist?
3. Does the standard state of something need to be able to really exist?
Q6:
1. Why don't standard states need to actually exist in nature?
2. Why isn't it necessary for something'ss standard state to really be possible?
3. Why is it alright for a standard state to only be theoretical?
Q7:
1. What can a standard state measure for example?
2. What's one example of something that is measured by a standard state?
3. What may a standard state be used to take a measurement of for example?
Q8:
1. Where is the majority of data about thermodynamic quantities gathered?
2. What is most data concerning thermodynamic quantities taken at?
3. 
Q9:
1. What is usually more important than temperature in a standard state?
2. What does temperature tend to be less important than in a standard state?
3. What counts more than temperature does in standard state?
Q10:
1. What is normal pressure?
2. Which level of pressure gets defined as normal?
3. What is the normal amount of pressure?
