It’s a fine Experiment and there are some causes behind this & you may try it with lemon or eggs . The result will come same .
Causes:- The density of the lemon is higher than the tap water , and . As we know that under standard condition the density of the water is 1g/cm³.
After that, if we add enough salt to the water the density of the water will increase and the lemon or egg will also float.
When we add some salt it changes the mass but not the volume very much.
It’s the reason behind this experiment.
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