how to identify the change is chemical or physical (please don't understand me about physical or chemical change I know)
give me tricks for identifying with some questions
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physical change does not require energy whereas chemical change requires energy
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Hy..
When changes r reversible it means it is chemical change ...chemical change is always reversible. Like melting of ice...
When changes r irreversible it means it is physical change...like burning of wood...it cant be come be into initial stage it means it is physical change....
Hope it really helps u ..
When changes r reversible it means it is chemical change ...chemical change is always reversible. Like melting of ice...
When changes r irreversible it means it is physical change...like burning of wood...it cant be come be into initial stage it means it is physical change....
Hope it really helps u ..
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