3. Some changes are listed in the following table. For each change, write in the blank column, whether the change can be reversed or not.
|S. No.||Change||Can be reversed (Yes/No)|
|1.||The sawing of a piece of wood.|
|2.||The melting of ice candy.|
|3.||Dissolving sugar in water.|
|4.||The cooking of food.|
|5.||The ripening of a mango.|
|6.||Souring of milk.|