(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 them. (c) Write any one example from your daily life experience which is based on diffusion of gases.
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(a) 1. The tendancy of a substance to maintain its shape when an outside force is applied is called Rigidity.
2. Diffusion is the net movement of molecules or atoms from a region of high concentration with high chemical potential to a region of low concentration with low chemical potential.
3. The compresibility is a measure of how much a unit volume of material will change when the pressure changes.
(b) Rigidity: Gas, Liquid, Solid
Diffusion: Solid, Liquid, Gas
Compressiility: Solid, Liquid, Gas
(c) You can smell perfume because it diffuses into the air and makes its way into your nose.
2. Diffusion is the net movement of molecules or atoms from a region of high concentration with high chemical potential to a region of low concentration with low chemical potential.
3. The compresibility is a measure of how much a unit volume of material will change when the pressure changes.
(b) Rigidity: Gas, Liquid, Solid
Diffusion: Solid, Liquid, Gas
Compressiility: Solid, Liquid, Gas
(c) You can smell perfume because it diffuses into the air and makes its way into your nose.
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