Five difference between the chemical change and physical changes
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CHEMICAL CHANGE
1)It cannot be observed.
2)Substance undergo change in chemical composition.
3)It cannot be measure.
4)Forms new substances.
Ex:Coal burn in air,etc.
PHYSICAL CHANGES
1)It can be observed.
2)Substance does not undergo chemical change.
3)It can be observed.
4)Do not form new substance.
Ex:Melting point,Boiling point,etc.
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