Question

.. Plants prepare their food by the process of photosynthesis. Why is this process a
chemical change?​

Answer 1

Answer:

Photosynthesis is the process through which plants convert light energy into chemical energy. Here is the chemical reaction involved: water and carbon dioxide combine to form glucose and oxygen. Since new chemical species are formed, photosynthesis is clearly a chemical change.

Answer 2

Explanation:

Because this process make a new product, and also it can't be reversed.

So it's a chemical change