write 5 points of difference between physical and chemical change
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PHYSICAL CHANGE
= it is reversible.
= its properties and composition of substances remain same.
= it is temporary.
=there is change in state .
=there is phsyical deformation.
CHEMICAL CHANGE
= it is irreversible.
=but in chemical change new substance is formed.
= it is permanent.
= there can be change in state or not.
= there is no physical deformation.
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