Question

Classify the following as chemical or physical changes: Melting of butter in a pan?

Answer 1

Physical change :

• A change in which a substance undergoes a change in its physical properties i,e shape, size, color, state, or appearance of the substance change is called a physical change, which is generally reversible in nature.
• In these physical changes, the chemical composition remains intact and no new substance gets formed.

Chemical change :

• A change in which the chemical properties of a substance get altered is called a chemical change.
• The chemical change is also called as a chemical reaction which is generally Irreversible in nature.
• In a chemical change, one or more new substances always get formed during the reaction.

Melting of butter in a pan:

• Melting butter in a pan is known as an example of a physical change.
• In this process, no new compound of different composition gets formed.
• Also, by melting butter, the butter gets converted from its solid to the liquid state, which includes the change in physical properties.
• The process can also get reversed by again solidifying the melted butter.

Thus, Melting butter in a pan is a physical change.