CBSE Class 7 Answered
physical change and chemical change
Asked by rashmipujari87 | 28 Mar, 2020, 06:13: PM
Expert Answer
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Physical change |
Chemical change |
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(i) No new product is formed. |
(i) New products are formed. |
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(ii) It is a temporary change. |
(ii) It is a permanent change. |
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(iii) The mass of substance does not alter in this change. |
(iii) The mass of substance does alter in this change. |
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(iv) Examples : Melting of wax, cutting of wood. |
(iv) Example : Rusting of iron, burning of a cracker. |
Answered by Ramandeep | 28 Mar, 2020, 06:52: PM
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