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Question
Explain the following statement: Digestion is a chemical change.
Answer in Brief
Solution
- When we eat, our mouth physically break down food into small pieces.
- Mechanical digestion occurs in the mouth, stomach and small intestine.
- Food is chemically changed in digestion when new, smaller substances are formed.
- Moreover, we will never be able to get back the raw material in the same form as it was before.
- Digestion of food is a permanent change which is irreversible.
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Chapter 3: Changes Around Us - Evaluation [Page 54]
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