Question

Give reason why?

A.Sponge is compressible ,but it is solid.

B.You get the smell of  perfume from a far away distance.

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Answer 1

Answer:

A. sponge is compressible but is solid because it's particles are far away from each other.

B. we get the smell of perfume from a far away distance because of the process of diffusion.

Answer 2

a) As it's minute pores in which air gets trapped , when we press it the air gets expelled out and we are able to compress it . It is a compressible solid . why sponge is solid ? this is because it has definite shape and volume . it changes shape only when an external force is applied in it .

b) This is due to a wonderful phenomena called diffusion . now , what's diffusion ? it is the passive moment of atoms, molecules, ions from a higher concentrations to a lower one . it is continued till balance is uniform . so , here in the condition of scent what happens is as soon as the perfume is released in air , (it is an compressed chemical) , it turns into gas and it's particles get mixed with air quickly .