Give two examples for each of the following cases:
(a) Physical changes which are reversible.
(b) Physical changes which are not reversible.
(c) Chemical changes.

AcademicChemistryNCERTClass 7

(a) Physical changes which are reversible are:
(i) Folding of paper
(ii) Melting of ice
(b) Physical changes which are not reversible are:
(i) Cutting of paper
(ii) Breaking of glass
(c) Chemical changes are:
(i) Burning of paper
(ii) Curdling of milk
Updated on 10-Oct-2022 13:21:38