What is the maximum number of electrons that a p orbital can hold

3. He is incorrect Dissolving salt in water and evaporation of the water are both physical changes. The reappearance of salt is evidence that the change was reversible by a physical change, so it could not be a chemical change.

Explanation:

Henry did a little experiment and noted that the sun can be completely diluted with water. That is, salt has a strong solubility. Solubility is a change in physical magnitude that is related to the ability of a solute, in this case salt, to establish covalent bonds with the molecules of a solvent, in this case water, which can be completely dissolved.

After that Henry was able to observe that if he left the water and salt solution in the sun, all the water would be evaporated. Evaporation is also a change in physical magnitude and refers to the ability of a liquid to transform into a gaseous body after being hit by an amount of thermal energy.

When the water is evaporated, the diluted sun reappears. This is because solubility is a reversible reaction. This type of reaction allows the reagents to become products and the products can also become the reagents that will originate them.