Which one of the following is a chemical change?
Cooking of vegetables
Chemical change:- It is a change in which the chemical composition of the substance changes because of the formation of a new substance.
Out of the following cooking of vegetables is a chemical change because the raw ingredients convert into different forms on the application of heat. Moreover, cooked food cannot be converted back to original state and hence it is a chemical and irreversible process.
Physical change:- In a physical change no new substance is formed and the chemical composition of substance remains the same. There are changes in physical properties like shape, size, etc.
Cutting of Fruits, Shredding a sheet of paper into bits, Melting of an ice cube are the examples of physical changes.