Certainly! Here’s a detailed explanation of why photosynthesis is considered a chemical change:

What is Photosynthesis?
Photosynthesis is the process by which green plants, algae, and some bacteria convert light energy, usually from the sun, into chemical energy in the form of glucose. This process occurs primarily in the chloroplasts of plant cells.

Is Photosynthesis a Chemical Change?
Yes, photosynthesis is a chemical change. Here’s why:

1. Transformation of Substances:
- In photosynthesis, carbon dioxide (CO₂) and water (H₂O) are transformed into glucose (C₆H₁₂O₆) and oxygen (O₂).
- The chemical composition of the reactants changes completely to form new products.

2. Energy Change:
- The process captures light energy and converts it into chemical energy stored in glucose.
- This energy change signifies that new substances are formed as a result of the reaction.

3. Irreversibility:
- Once photosynthesis occurs, the produced glucose and oxygen cannot revert back to carbon dioxide and water under normal conditions.
- This irreversibility is a hallmark of chemical changes.

4. Involvement of Chemical Bonds:
- During photosynthesis, chemical bonds in the reactants (CO₂ and H₂O) are broken, and new bonds are formed to create glucose and oxygen.
- The rearrangement of atoms confirms the occurrence of a chemical change.

Conclusion:
In summary, photosynthesis is a chemical change due to the transformation of substances, energy changes, irreversibility, and the involvement of chemical bonds. Understanding this process is crucial for appreciating the role of plants in our ecosystem and their contribution to life on Earth.

Yes, photosynthesis is a chemical change because it produces new substances:

Process
Plants use energy from the sun to break down carbon dioxide and water molecules and reform them into glucose and oxygen.

Explanation
The chemical reaction that occurs during photosynthesis produces new substances, such as glucose and oxygen, so it's a chemical change.

Temporary change
Although new substances are formed, the original state of the substance can be regained, so photosynthesis is also a temporary change.