Question

Burning of candle is what type of change whether it is a physical change or chemical change.​

Answer 1

━━━━━━━━━━━━━━━━━━━━

The burning of a candle involves a physical as well as a chemical change .

Reason:-

• The wax under the wick melts . The molten wax flows down and solidifies . These are changes in state and , therefore , physical changes .

• A part of the molten wax that vaporises burns to form carbon dioxide and water vapour . The burning of wax is a chemical change.

━━━━━━━━━━━━━━━━━━━━

Physical state:-

1. A physical change is temporary .

2. A physical change is reversible .

3. No new substances are formed after a physical change .

4. After a physical change, the mass of the substances remains unaltered .

5. Example :

• Melting of ice
• evaporation of liquid
• freezing of water etc .

━━━━━━━━━━━━━━━━━━━━

Chemical change:-

1. A chemical change is permanent .

2. A chemical change is Irreversible .

3. New substances are formed after a chemical change .

4. The mass of the individual substance undergoing a chemical change is altered .

5. Example :

• Photosynthesis
• fermentation
• respiration etc .

━━━━━━━━━━━━━━━━━━━━

Answer 2

$\huge\boxed{\fcolorbox{white}{pink}{Answer}}$

$\mathfrak{\blue{\huge{\underline{\overline{♡Good}}}}}$$\mathfrak{\huge{\underline{\overline{\pink{Morning♡}}}}}$

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. Since it again turns into solid wax on cooling. This is a reversible change.

Chemical Changes in Burning Candle: When you light the candle, the wax present near the wick will melt. Wick absorbs the liquid wax. The liquid wax vaporizes due the heat produced by the flame. This wax vapor near to flame burns and gives new substances like Carbon Dioxide, Carbon soot, water vapours, heat and light. This is an irreversible change.

Thanks for thanks kokila ✌