Question

Burning of candle evolves both physical and chemical changes.Explain the two types of changes ​

Answer 1

Explanation:

When a candle burns, both physical and chemical change occurs. Candle wax gets melted when heated is a physical change. Wax on cooling, again turns into solid wax. The wax near to flame burns and gives new substances like Carbon dioxide gas, Carbon soot, water vapour, heat and light.

Answer 2

✍When a candle burns wax is melted .

✍ We can obtain solid form of this wax by cooling and again turn this into liquid by heating .The state of the candle is changed but the chemical properties remain the same. Hence, it is a physical change.

✍ Whereas when a candle burns it release carbon dioxide gas and ash.

✍ Here ash and CO2 are new products Hence burning of a candle is a chemical change.

Note : Burning of anything is always a chemical change.