Question

Respiration is a chemical change.​

Answer 1

Yes respiration is a chemical change. We know that, respiration is the process of breakdown of food to form energy. As here, Glucose (C6H12O6) is oxidised to carbon dioxide (CO2) an' water (H2O) along with released energy at the cells by oxygen from the air that we breathe in

Answer 2

Answer:

a.Chemical change is a process in which a new substance is formed.

• Respiration is irreversible process

• During respiration, oxygen is convert into carbon-dioxide( a new substance is formed).

• During respiration, there is change in their chemical composition.

• During respiration, absorption and evolution of energy takes place.

These are characteristics of chemical reaction. Hence, respiration is a chemical reaction.