Explanation:
A change that does not bring any difference in chemical composition of a substance are known as physical changes.
For example, dissolving sugar in water, melting of gold, condensation of steam etc are all physical changes.
Whereas a change which causes difference in chemical composition of a substance is known as chemical change.
For example, souring of milk, burning of gasoline etc are chemical changes.
Therefore, we can conclude that given changes are classified as follows.
