Junior Class 5 Answered
in the mcq it is written that melting of wax is a physical change but it is a chemical change.
Asked by sainemani | 04 Feb, 2017, 02:40: PM
Expert Answer
- In a chemical change, the composition of the reactant changes after the reaction, i.e a new substance is said to be formed in a chemical reaction.
- The melting of a wax, does not form a new substance and neither does it change the chemical composition of the wax in due course of melting.
- The only change that occurs in a melting of the wax is its physical state i.e change from solid into (semi) liquid and then again into solid state.
- This is the reason why the melting of a wax is supposed to be a physical change.
Answered by Abhijeet Mishra | 06 Feb, 2017, 10:05: AM
