The physical change occuring would be the butter melting, because the butter is still butter, but it changed from a solid to a liquid. This is not the chemical change, because you can put melted butter in the fridge and it would be solid again. The chemical change that is occuring would be toasting the bread. This is because when you toast bread, you can't untoast it. It changed, the chemical status of the bread is now toast if that makes sense. The key thing to remember here is that a physical change can be undone whereas a chemical change cannot.
National Heritage is a reflection of our rich and glorified history. It shows how much we have achieved as a Nation in the past and tells the world that India was once an advanced nation and encourages us the believe that there is no reason why we cannot be advanced once again
