CBSE Class 9 Answered
(a) Define the following properties of matter.
(i) Rigidity (ii) Diffusion (iii) Compressibility
(b) Arrange solids, liquids and gases in the ascending order as regards the extent to which each of the above properties is exhibited by them.
(c) Write any one example from your daily life experience which is based on diffusion of gases.
Asked by Topperlearning User | 23 Mar, 2016, 10:40: AM
Expert Answer
(a)
(i) Rigidity - It is the property of the solids to maintain shape even when they are subjected to external force.
(ii) Diffusion- Intermixing of particles of two different types of matter on their own is called diffusion.
(iii) Compressibility - It is the property of a matter by virtue of which large volume of matter can be compressed into a vessel of comparatively volume.
(b) Rigidity - Gas < Liquid < Solid
Diffusion - Solid < Liquid < Gas
Compressibility - Solid < Liquid < Gas
(c) Smell of perfume/aroma of food spreading in room is an example of diffusion of gases.
Answered by | 23 Mar, 2016, 12:40: PM
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