Classify the following changes into physical change, chemical cha… - Vidyadip

Question

Classify the following changes into physical change, chemical change, reversible change or irreversible change.
(i) Folding of paper to make a boat.
(ii) Cooking chapati from wheat flour.

✓

Answer

(i) Folding of paper to make a boat is a physical and reversible change because only the shape of the paper changes and it can be unfolded back.
(ii) Cooking chapati from wheat flour is a chemical and irreversible change because new substances are formed and the original flour cannot be obtained again.

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