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In short, pumice is less dense than water, so it floats.

During the formation of pumice stone, air bubbles are incorporated into the stone itself. These air pockets make the overall mass of the stone much lower than you'd expect, and work like small floatation devices when the stone is placed in water.

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Q: Why pumice stone doesnot sink in water?
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Related questions

Stone which does not drowns in water?

Pumice, a volcanic stone, does not sink in water.There is one type of stone that won't SINK in water.....pumice.


Which stone did not sink in the water?

Pumice is a type of stone that floats on water due to its high porosity and low density.


Which stone doesnt sink in water?

Pumice


Which stone never sink in water?

Pumice.


Which stone cannot sink?

Pumice stone does not sink in water unless it has been floating for many years.


Which stone which never sink in water?

pumice (a volcanic rock)


Which stone not sink?

Pumice does not sink.


Which stone does not sink?

Pumice does not sink.


Which stone dose not sink in water?

pumice does not sink in water unless it has been floating for many years


Which stone does not sink in sea?

pumice


What is the name of The rock which do not sink in water?

pumice stone


What stone do not sink in water?

A pumice stone is light weight due to numerous trapped gas bubbles that can cause it to float on water.