is breathing physical or chemical change ?

Breathing is physical process, respiration is a chemical change.

  • 5

 breathing is a chemical change

  • 2

Breathing is a chemical process. When air is breathed in, it reacts chemically; when a person breathes out, they release more carbon dioxide than they breathed in, and less oxygen.

  • 1

 Breathing is a chemical change,
Fireworks going off is an Chemical change
Boiling water added to instant coffee is a physical change because the chemical makeup is not changing.
A plant making food by photosynthesis is a Chemical change.

The key point about physical and chemical changes is.

A Chemical change is one that is near impossible to change back. It only occurs when a new substance is produced or the original substance disappears. 

  • 3
What are you looking for?