Question

12 Comment on the following statements: (a) Sponge though compressible is a solid. (b) Sugar crystals dissolve faster in hot water than cold water.

Answer 1

a. sponge contains tiny bubbles of Air which are compressible
b. diffusion occurs faster in hot temperatures than in cold temperatures

Answer 2

Answer:

Here is the answer

Explanation:

a) Sponge is a solid still it can be compressed as it has air spaces between them and air is filled in those air spaces, so when we compress the sponge the air is expelled out of those spaces and hence the sponge is compressed and when we release it, it attains it's initial position as the air is again filled in those spaces.  

b) As we know that evaporation has many causes, one of the cause of evaporation is wind, so on a windy day the evaporation increases and clothes dry quickly.