Question

explain the following term

rigidity

Compressibilty

kinetic energy

fluidity

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Answer 1

Answer:

Rigidity: Rigidity is property shown by solids. It relates to tendency of solids to resist any change in their shape when an external force is applied. If enough force is applied solids may breaks but do not change their shapes, liquids are not at all rigid as they change their shape.

Compressibility: compressibility means reduction in the volume of a substance on applying pressure. Solids and liquid are incompressible. This is because there is very empty space between the particles of solids and liquids. For example, you cannot fill more petrol in your car petrol tank even if you apply pressure. On the other hand, gases are easily compressible on applying pressure. It is because there are large empty space between the particles of gases.

Fluidity: fluidity is a property shown by liquids and gases. It means tendency to flow. Liquid and gases can change their shapes when a force is applied externally. This is the reverse of rigidity.

Filling a gas container; a gas container can be filled with a large amount of gas when an external pressure is applied on a gas while filling. In the gas container, the gas particles are compressed into a small volume.

Shape: solids have definite shapes and definite boundaries. Liquid and gases do not have fixed shapes. They acquire the shape of the container in which they are kept.

Kinetic energy: kinetic energy is also called energy of motion since particles of matter always remaining motion, they have kinetic energy.

In solids, the particles are bound to each other with strong inter particle forces of attraction, they have least kinetic energy. In liquid, the particles are less tightly bound to each other as the interparticles force of attraction is lesser then in case of solid particle. The K.E of solid particles and hence the particles of liquid of liquid can move more freely. In gases, the particle are bound by very weak forces of attraction. Gas particles can, therefore move almost freely and have a much higher value of kinetic energy. Also temperature increase, kinetic energy of particles of all kinds of matter increases.

Density: density is mass per unit volume. Density means how compact a substance is. Solid, because their particles are tightly packed, occur smaller volume and have greater densities. Gases have particles which can move around freely and therefore they can occupy more volume therefore, gases have least density

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Answer 2

Heya....

rigidity:

it is a quality found in people and objects that don't bend — though they might eventually break

compressibility:

The compressibility factor is a correction factor which describes the deviation of real gas from ideal gas behaviour. It is useful thermodynamic property for modifying the ideal gas law to account for real gas behaviour.

kinetic energy:

The kinetic energy of an object is the energy that it possesses due to its motion.

fluidity:

Fluids are substances than can flow. Solids do not possess fluidity whereas liquids and gases are fluids. Hence alcohol and oxygen are both fluids.

hope it helps you