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ICSE Class 8 Answered

why is boiling of eggs a chemical change while the boiling of water is a physical change?
Asked by nathsantanukumar | 23 Mar, 2018, 10:41: AM
answered-by-expert Expert Answer
Physical change is a change which is -
Temporary and reversible
No new substance is formed
Easily reversible.
 
Boiling of eggs a chemical change 
In case of boiling of eggs, the composition of egg changes.
New substance is formed and the change is irreversible.
 
Boiling of water is a physical change
Boiling of water to form water vapour is a physical change.
There is only a change in the state of matter and no chemical change has occurred and it is a reversible change.
Answered by Varsha | 23 Mar, 2018, 11:07: AM

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