Tuesday, February 3, 2009
Density is mass per unit volume.
example:
volume = 10cm cube
mass = 0.5kg
= 0.5 x 1000
= 500g
density = 500/10
= 50 g/cm cube
* Why is salt water denser than pure water?
In pure water, the water molecules are spread around in the water. But when salt is dissolved into water, the salt molecules are actually shoved in between the water molecules, making the molecules very tightly packed and thus making the liquid denser.
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