Question

Burning of candle is a chemical reaction give the properties connected with this

Answer 1

New substance is formed and irreversible.
Change in shape and size.
And wax melted cannot be reversed

Answer 2

Hey friend here is your answer....


Answer :


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


Reason :


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


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



$\bold{physical \: change}$




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 .


$\bold{chemical \: change}$



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 .




$\bold{hope \: it \: helps \: you \: ...}$