Germination of a seed is a chemical change because it involves complex biochemical reactions that result in the conversion of stored food in the seed to a form that can be used by the growing embryo. Let us look at the various chemical changes that occur during germination.

Hydrolysis of stored food
During germination, the stored food in the seed is hydrolyzed by enzymes present in the seed. This results in the breakdown of large molecules such as starch into smaller molecules such as glucose. This process of hydrolysis is a chemical change because it involves the breaking of chemical bonds.

Respiration
The growing embryo requires energy to sustain its growth and development. This energy is obtained through the process of respiration, which is a series of chemical reactions that occur in the presence of oxygen. Respiration involves the breakdown of glucose molecules to release energy in the form of ATP. This process of respiration is a chemical change because it involves the breaking of chemical bonds.

Synthesis of new molecules
During germination, new molecules such as proteins, nucleic acids, and lipids are synthesized by the growing embryo. This synthesis involves the formation of new chemical bonds between atoms, which is a chemical change.

Conclusion
In conclusion, the germination of a seed is a chemical change because it involves the hydrolysis of stored food, respiration, and the synthesis of new molecules. These processes involve the breaking and formation of chemical bonds, which are characteristic of chemical changes.

Germination of seed is a chemical change because when a seed get germinate it never turns back in the form of seed.