Physical Parameter

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Physical parameter

Name of the Physical Quantity: Mass and Weight 

> It is fundamental unit having SI unit kilogram (kg).

> The mass of a body does not vary as its position changes.

     The weight of a body is result of the mass and gravitational attraction. 

      So, it varies with position because the gravitational attraction of the earth

      for a body varies.  

> Weight is a force, while mas is the property that determines the strength of this force.

> It is extensive property.  

       1 kg = 1000 g  

       1 metric ton = 1000 kg  

Atomic Mass

•  It is the mass of an atom. The atomic masses are expressed in atomic mass unit (amu).
• 1 amu = A mass exactly equal to one twelth of the mass of one carbon - 12 atom.
• 1 amu = 1/12 X mass of one C-12   

Name of the Physical Quantity: Volume

          > It is the amount of space occupied by a three dimensional object.

          > SI unit of volume is (meter) ³ or m³. Common unit is liter (L).

          > 1 L = 1 dm³ = 1000 mL = 1000 cm³               1000 L = 1m³

                > A volumetric flask is used to prepare a known volume of a solution.

          > In thermodynamics, the volume of a system is an important extensive                      parameter for describing its thermodynamic state.

          > The specific volume, an intensive property, is the system's volume per unit             of mass.

          > Volume is a function of state and is interdependent with other thermodynamic                  properties such as pressure and temperature.