Question

A piece of wood floats in water. What happens to the piece of wood when it kept in alcohol?

Answer 1

It floats because it weighs less than amount of water it would have to push out of the glass if it sank. Wood, cork, and ice are all less dense than water, and they float; rocks are more dense, so they sink.

Answer 2

A piece of wood floats in water because, its $\bf{Density}$ is less than that of water. This don't allow the wood to settle down in water.

We now that density of alcohol is less than that of water, but it also cares from alcohol to alcohol. So, if it will be denser than wood then it will float.