A drawing sheet changes when you draw a picture on it. Can you reverse this
change
5 Give examples to explain the difference between changes that can or not be
reversed
Athick coating of a paste of Plaster of Paris (POP) is applied over the bandage
fractured bone. It becomes hard on drying to keep the fractured bone
Immobilised. Can the change in POP be reversed?
7 bag of cement lying in the open gets wet due to rain during the night. The
next day the sun shines brightly. Do you think the changes, which have occurred
in the cement could be reversed?
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the things which cannot be changed into the 1st position is called irreversible change (ir)
The things which can be changed into 1st state is called reversible change (r)
5 ex for ir
milk turningto curd
making a tea
converting plastic to a useful thing
Time
an explosion
pop cannot be reversed
cement cannot be reversed
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