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CBSE Class 10 Answered

What is difference between melting and buring of wax

Asked by himanih100 | 13 Sep, 2021, 12:11: PM
Expert Answer
Melting of wax is a physical change. By heating , solid phase of wax becomes liquid phase .
 
The process of melting of wax is reversible. If the wax in liquid state is cooled , then it becomes solid wax.
 
Burning of wax is chemical change . Wax material is made up of hydrocarbon .
 
While burning the wax,  hydrocarbon molecules are undergoing chemical reaction that changes hydrocarbon molecules
to be converted into Carbon-di-oxide and water vapour. This is an oxidation reaction.
 
The process of burning wax, which is a chemical change is irreversible.
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