Which two changes does a chemical compound undergo ? Explain each with example.
Chemical compounds undergo following two types of changes
Physical changes are those in which shape of a molecule or a substance changes without breaking » of bonds or change in state of matter, e.g., Melting of ice in water.
Chemical changes are those changes in which the bonds are broken and new bonds are formed. e.g.,
(ii) Hydrolysis of starch into glucose (organic chemical reaction).