Question

What type of change is the melting of wax?

Answer 1

Physical change:

• “A change in which a substance undergoes a change in its physical properties is called a physical change.”
• A physical change is generally reversible.

Melting of wax:

• When a candle is lighted, the wax of the candle melts due to heat which again solidifies on cooling.
• This change results only in the change in the physical properties of wax and no change in chemical properties takes place.
• Thus, it is a physical change. It is also reversible.