5) Photosynthesis is a _________ change
1) Photosynthesis is a chemical change as it involves the formation of new substances. Photosynthesis helps in the growth of plants and thus several reactions take place.
2) In the process of photosynthesis the green plants absorb water from soil and sunlight from air to produce their food called glucose and the release of oxygen also takes place. Hence the new product is formed (glucose) and this process cannot be reversed back.
Final answer - Photosynthesis is a chemical change.