No one can drown in the Dead sea, which is 25% salt, making it extremely dense. Consequently, humans are extremely buoyant on the Dead Sea..

A bubble is round because the air inside it presses equally against its parts, causing all surfaces to be the same distance from its center.

Dirty snow malets faster than clean as impurities lower the melting point.

An egg will float if placed in water in which sugar is added.

Hot water weighs more than cold water.