Question

Why does a piece of sponge become heavy when dipped in water

Answer 1

Explanation:

By squeezing out all the air bubbles the sponge has less air pockets and therefore it will sink to the bottom. ... As the sponge absorbs the water and has less air pockets, the heavier it becomes and therefore it will sink lower in the water instead of floating on top of the surface/water.

Answer 2

Answer:

because the piece of spunge gathers water in it when dipped in water