Matter

Matter consists of infinite number of molecules. They are mainly classified in two state-solids and Fluids.

Sr. NO.	Solid	Fluid
1.	Molecules are very closely spaced.	The space between molecules is relatively large.
2.	Inter molecular cohesive force is large.	Inter molecular cohesive force is less.
3.	Solid can resist tensile, compressive,and shear force upto a certain limit.	Fluid can not resist tensile force or very less and can resist compressive forces only when it is kept in a container.
4.	Solid does not change shape or flow	Fluid changes its shape and flow because of inability to resist shearing stress.
5.	Solid undergoes static deformation Example: metal, timber, concrete, PVC etc.	Fluid undergoes continuous deformaion Example: kerosene, petrol, water, CO₂, NO₂ etc.

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