Recently, I did an experiment with salt and electric current. I set up an open electric current in a used battery holder where the missing part of the circuit is two metal plates. I then fill this open space with table salt. Then, I close the circuit by putting a 3V battery inside the battery holder. Judging by the rise in the circuit's temperature, I think there was a current flowing through the circuit. I then turn the whole battery holder upside down and the salt stayed there instead of falling down. Once I removed the battery, the salt fell down onto the table. I repeated the experiment 3 times with the same result.
P/s: Sorry for my terrible drawing, it's my first time using a website to sketch a circuit (or anything).