Question

How is respiration a chemical change?so, is breathing a chemical change?.....

Answer 1

breathing and respiration are different.

breathing is just inhalation and exhalation.

Whereas, respiration involves breathing + diffusion at alveoli level + diffusion at the tissue level + transport of gases by haemoglobin.

hope this helps you

Answer 2

As respiration forgoes inside the body and process inside the body can be called as chemical change.

But breathing is done outside the body and can be called as physical change.