A substance that changes form has undergone a physical change, which might be reversible. A substance that transforms into a different substance has undergone a chemical change, which is harder to reverse. Learn about reversible and irreversible changes.
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Veera91
Irivesable change is also known as chemical change...in this change substance can't be obtained at it's original state after changing...
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A substance that changes form has undergone a physical change, which might be reversible. A substance that transforms into a different substance has undergone a chemical change, which is harder to reverse. Learn about reversible and irreversible changes.
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burning of paper.......