Question

Comment on the following properties: (A) Rigidity (B) Compressibility (C) Fluidity (D) Filling a gas container (E) Shape (F) Kinetic energy and (G) density

Answer 1

The given properties are explained below.

(A) Rigidity:

1. Rigidity is defined as the tendency of matter which has the capability to resist a change in shape and it is shown by solids.
2. As we know that solids are highly rigid and liquids are less rigid as compared to solids whereas gas has a very low property of rigidity in them.

(B) Compressibility:

1. Compressibility is defined as the power to reduce the gas to a lower volume when an external force is applied to them.
2. Solids show the negligible property of compressibility and liquids have low compressibility whereas gases are easily compressible because there are large empty spaces present between the particles of gases.

(C) Fluidity:

1. Fluidity is defined as the tendency to flow and it is a property that is shown by liquids and gases.
2. Solids have less fluidity in them.
3. Liquids, as well as gases, have the property to change their shape when an external force is applied on them.

(D) Filling a gas container:

1. Filling a gas container means the attainment of the shape of the container by the gas.
2. As we know that solids do not need a container to contain them whereas liquid needs a container to contain them while gases have the property to fill the container completely.

(E) Shape:

1. The shape is defined as a definite boundary. As we know that solids have definite boundaries as well as definite shapes whereas liquids and gases do not have fixed shapes and boundaries.
2. They have the property to acquire the shape of the container in which they are kept.

(F) Kinetic energy:

1. Kinetic energy is defined as the energy of motion and as we know that the particles of matter are always in motion so they have kinetic energy.
2. Solids have the least kinetic energy because particles are bound to each other with a strong inter-particle force of attraction whereas the kinetic energy of particles in liquids is more as compared to solid while the gas particles have a much higher value of kinetic energy.

(G) Density:

1. Density is defined as the mass per unit volume. It refers to how compact a substance can be.
2. Therefore solids have a high density as compared to liquid whereas gases have the least density.