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7th Class Science Sample Paper Science Sample Paper - 10

  • question_answer
    State the differences between physical and chemical changes.

    Answer:

    Difference between physical and chemical changes:
    S. No. Physical Change Chemical Change
    (i) It is mostly reversible. It is irreversible.
    (ii) No change in the composition of the substance. The composition of substances changes.
    (iii) It is a temporary change. It is a permanent change.
    (iv) No new substance is formed A new substance is formed.


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