Question

What changes do you see in the appearance of a candle after you lit it?

Answer 1

chemical reaction takes place and thus melting of candle and formation of new material WAX

Answer 2

When a candle burns, both physical & chemical changes occur. Physical Changes in Burning Candle: On heating, candle wax melts and form liquid wax. It is a physical change. ... This wax vapor near to flame burns and gives new substances like Carbon Dioxide, Carbon soot, water vapours, heat and light.