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How would you prove that breaking down of ozone layer and the process of photosynthesis chemical change

How would you prove that breaking down of ozone layer and the process of photosynthesis chemical change
 
 

Grade:7

3 Answers

Ayesha Jabin
14 Points
2 years ago
Dear student, 
Chemical change is an irreversible change.(chemical changes are never reversible )
Keeping this point in mind,  we will answer the questions.
Depletion of ozone layer means an irreversible change which cannot be reversed. Thus a chemical change .
Photosynthesis is also an irreversible change thus a chemical change.
Hope this helps
Regards
Arun
25763 Points
2 years ago

Breaking down of the ozone layer is a chemical change.

The chemical equation for the destruction of the ozone layer is;

     O3 + Cl  → ClO + O2

In this process, the new substance that is oxygen is formed from original substance, ozone.

So the destruction of ozone is a chemical change.

Photosynthesis is a chemical change.

During photosynthesis, water and carbon dioxide reacts in presence of light to form new substances that are glucose and oxygen.

12 H2O + 6 CO2 → C6H12O6 + 6 O2 + 6H2O

So photosynthesis is a chemical change.

 

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