Allied solutions

Allied solutions

Grade 7

Physical and Chemical Changes | Exercise

Question 11

Q10) Photosynthesis is a natural process by which green plants manufacture food in the presence of sunlight,

  1. Are any new products formed during the above process.
  2. Can the change be reversed or is it irreversible
  3. State the conclusions which can be drawn, to represent photosynthesis as a physical or a chemical change.

Solution:

  1. The change is permanent and new products are formed like glucose and oxygen.
  2. The change is irreversible.
  3. It is a chemical change because carbon dioxide and water cannot be obtained back from glucose and oxygen.

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subject-cta

Question 11

Q10) Photosynthesis is a natural process by which green plants manufacture food in the presence of sunlight,

  1. Are any new products formed during the above process.
  2. Can the change be reversed or is it irreversible
  3. State the conclusions which can be drawn, to represent photosynthesis as a physical or a chemical change.

Solution:

  1. The change is permanent and new products are formed like glucose and oxygen.
  2. The change is irreversible.
  3. It is a chemical change because carbon dioxide and water cannot be obtained back from glucose and oxygen.

Still have questions? Our expert teachers can help you out

Book a free class now

Want to top your chemistry exam ?

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Book a free class now
subject-cta
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