Question

Example of reaction showing both physical and chemical changes

Answer 1

A change can't be both physical and chemical, but physical and chemical changes can occur simultaneously. This is what happens when a candle is burned: the wax is melting, which is a physical change, and it's combusting, which is a chemical change.
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So i don't think so that there is such a reaction

Answer 2

Change of solid into liquid and liquid into solid