Question

Burning wax is a chemical change whereas melting wax is a physical change. justify the statement by giving proper statemnets.

Answer 1

Answer:

The candle is a physical change because when a candle burns, the wax melts. The wax undergoes a change of state from a solid to a liquid when given heat, but no new substance is formed during the process. The composition of the wax in both states does not change, but their state and shape does. When we cool down the melted candle wax, it turns back into a solid that can be used again. Hence, this physical change is easily reversible. The candle also undergoes a chemical change. When a candle burns, it reacts with the air, oxygen, and candle wax from the wick to produce a flame hat has its own molecular structure. (hope this helps)