Question

1.
Define the following terms.
(a) Reversible change
(b) Chemical change
(c) Physical change
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Answer 1

Answer: i.) the changes which can be reverse back are called reversible change.

ii.) The change which cannot be reversed back or which cannot be reverse it in its own previous shape, size etc and and which results in an another new substance is called chemical change. For example- burning of wood, etc

iii.) the change which can we reverse back in his own original shape size for formation are called physical change. For example- blowing of a balloon, etc