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Define: a Physical Change , a Chemical Change , Give Two Examples for Each of the Above Two Changes. - ICSE Class 7 - Chemistry

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Question

(a) Define:
(i) a physical change
(ii) a chemical change
(b) Give two examples for each of the above two changes.

Solution

(a) (i) Physical chagne : A temporary change in which no new substance is formed, the composition of substance remains the same, though its state, shape and size may change.
(ii) Chemical change : A permanent change in which new substances are formed whose composition and properties are completely different from those of the original substances.
(b) Physical change:
(i) Change of water into its vapours.
(ii) Heating of iron rod.
Chemical change:
(i) Burning of wood.
(ii) Breathing.

  Is there an error in this question or solution?
Solution Define: a Physical Change , a Chemical Change , Give Two Examples for Each of the Above Two Changes. Concept: Concept of Physical and Chemical Changes.
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