(Sarah of the Clue Crew pours the blue contents of a graduated cylinder into a beaker.)  Colored water, cooking oil & colored alcohol can be layered because each liquid has a different this, defined as mass divided by volume
[DOC] [TLE] Water sourcebook a series of classroom activities for grades 3-5 [PAR] Water can be found in all three states of matter (liquid, solid, and gas) on earth, 
most often in the liquid state.