Give two examples for each of the following cases:
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.
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(a) (i) Folding of paper (ii) Melting of ice.
(b) (i) Tearing of paper. (ii) Breaking of glass.
(c) (i) Reaction between vinegar and baking soda. (ii) Burning of a match stick.
There are many other examples in each case which can be given.
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