Question

what is fluidity and compressibility?

Answer 1

(i) Rigidity : It is the property which helps a substance to retain its shape when force is % applied to it. Solids are rigid while gases, and liquids are not.                         (ii) Compressibility: The particles of matter can be compressed or reduced in volume by applying force or pressure. Gases are highly compressible. (iii) Fluidity : It is the tendency of a substance to flow. Liquids and gases possess fluidity while solids are rigid. (iv) Filling a gas container: The molecules of a gas move in all directions and due to negligible interparticle force of attraction can fill the container. (v) Shape: Solids have definite shape whereas liquids take the shape of the container in which they are placed and gases do not have any shape. (vi) Kinetic energy : It is the energy possessed by the particles due to their motion. The particles of a gas have maximum kinetic energy due to free motion of gas particles in all directions. Solids have minimum kinetic energy due to least movement of particles. (vii) Density : Density is the mass of a substance per unit volume. Solids have highest density since their molecules are closely packed.

Answer 2

fluidity is the ability to flow while compressibility is ability to get compressed
fluidity is maximum in liquids while compressibility is maximum in gas
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