Answer
Because water can dissolve sodium chloride but not silica, if we add water to this mixture, the sodium chloride would dissolve in the water, and the silica would remain. We filter out the silica and are left with just a solution of water and sodium chloride. If we heat this solution, the water evaporates, and we are then left with just the sodium chloride.
Work Step by Step
Because water can dissolve sodium chloride but not silica, if we add water to this mixture, the sodium chloride would dissolve in the water, and the silica would remain. We filter out the silica and are left with just a solution of water and sodium chloride. If we heat this solution, the water evaporates, and we are then left with just the sodium chloride.
