burning of incense stick physical or chemical change
Answers
Answer:
Burning of an "incense stick" is not a "physical change" as it is a irreversible change. When an incense stick is burnt new substances ash and smoke are produced. The incense stick cannot be produced from the residues again. Hence it is a chemical change because it goes through a chemical reaction and is irreversible while physical changes are reversible.
Explanation:
Incense are biological products which produce soothing aroma. There are two types of incense which are direct and indirect incense.
The direct incenses use flame to produce fragrance while indirect incense are capable to produce fragrance without any flame.
Incense stick comes under indirect incense which use flame to produce fragrance.
Chemical changes:
These sticks use flame, so they are mixed with naturally combustible materials like wood and charcoal where the combustion takes place. They also spread the fragrance to a particular area through diffusion process.
Physical changes:
The sticks’ size get reduced and the color of the stick becomes black near the burning area. The waste burned material called ashes are formed.