what is the difference between physical and chemical changes?
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chemical change is reversible
physical change is irreversible
no new product is formed in physical change
new product is formed in physical change.
Eg (physical); tearing of paper
Eg(chemical);burning of wood,photosynthesis
Eg(chemical+physical);burning of candle
physical change is irreversible
no new product is formed in physical change
new product is formed in physical change.
Eg (physical); tearing of paper
Eg(chemical);burning of wood,photosynthesis
Eg(chemical+physical);burning of candle
Anonymous:
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how to identify physical and chemical change
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1
physical which not reverse and chemical which is reverse
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because in chemical chamge it occur in chemically and in physical it changes it outer porsion
if you want you can also see in Google or in your books
like when you see chocolate gets melted you can freeze it to make it settle it called physical change
like when you see chocolate gets melted you can freeze it to make it settle it called physical change
when you see rust on the on the iron it can't be retained in the same form again thus it is called chemical change.
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