the knowledge of density can give oneself more knowledge

 formula for density is.. Density =Mass

                                                  volume

OR

V = m       OR     m = DV

       D

TIPS TO REMEMBER:
solid is g/cm3
liquid is g/mL
1 cm3 of water = 1mL

Density of water is 1000 g/L or 1.0 g/mL

If d of object is < than the d of liquid..then it should be floating on top

otherwise, it would be sinking!

Below is a colourful experiment involving density!

http://www.youtube.com/watch?v=7HNMiUH1Xkk

JN