Sodium Chloride (salt) is a compound. Its chemical symbol is NaCl.
Dissolving is a physical change in water.
NaCl ----> Na + Cl
General Info about the model:
Clear button: Clears all
Add NaCl button: will add the amount determined by slider. If clicked again, more NaCl will be added and the total will be indicated by the Data box.
Add water button: this button is important since without water, NaCl will not dissociate into ions.
Mix button: sets the water and NaCl in motion