Question

Salt dissolves in water. But as salt is constantly added to the water, at some point

salt appears at the bottom of the vessel. Why does this happen?

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Answer 1

Explanation:

Salt usually dissolves in water. But water has a saturation point. If we keep on adding salt, it will reach a point where it can no longer dissolve any more salt(saturation point). As no more salt can be dissolved anymore so that is why salt appear at the bottom of vessel at some point.

Answer 2

Answer:

At the molecular level, salt dissolves in water due to electrical charges and due to the fact that both water and salt compounds are polar, with positive and negative charges on opposite sides in the molecule. The bonds in salt compounds are called ionic because they both have an electrical charge—the chloride ion is negatively charged and the sodium ion is positively charged. Likewise, a water molecule is ionic in nature, but the bond is called covalent, with two hydrogen atoms both situating themselves with their positive charge on one side of the oxygen atom, which has a negative charge. When salt is mixed with water, the salt dissolves because the covalent bonds of water are stronger than the ionic bonds in the salt molecules.