Question

When a candle burns, both physical and chemical changes take place. Identify these changes.​

Answer 1

Answer:

Physical Changes: On heating, candle wax gets melted. Since it again turns into solid wax on cooling. So, the melting of wax and vapourisation of melted wax are physical changes. Chemical Changes : The wax near flame burns and gives new substances like carbon dioxide, carbon soot, water vapour, heat and light.

Answer 2

Answer:

When a candle burns, both physical and chemical changes takes place. The wax near the wick vape and forms flame. This is a chemical change. Melted wax can be again changed into a candle which is a physical change.