Does anyone know this experiment with Salt (sodium Chloride)?

Blooh

New member
Hi Guys!
We have a project that should be somehow related to our lessons in Physics.
So now, we have tackled about surface tension. So I have thought about this but don't know the procedure, the measurements and the name of this experiment.

All I know is that there should 4 or 5 layers of water-salt mixtures that has been colored by dye or food coloring or something like that. The water with the most salt is the densest so it should be at the bottom and then the next one and so on.

Please Help me. I need a procedure.
A link would be best.
Thank you.
 
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