Thread: Why is the density of water an exact mathematical value?

Hello everyone,

As far as I know The standard units for Mass and of Distance is historically not derived from the mass and volume properties of water.(Or am I wrong?)

Then why is that the density of Water is exactly 1000 kg/m^3 ?

I think It's impossible unless the standard unit off mass or distance is derived from the mass and volume property or water.

The density of water is a function of a couple of conditions, the one with the strongest correlation being temperature. You'll encounter this with work in chemistry labs.

Originally Posted by vilyanurchandra

Hello everyone,

As far as I know The standard units for Mass and of Distance is historically not derived from the mass and volume properties of water.(Or am I wrong?)

You are. The gram was first defined as the weight of 1 cc of water.

and the metric system was invented by french scientists that measured the distance from the north pole to the equator and divided it into a million. but water solutions have different weights. say if it is saturated with salt for instance