Question

The burning of paper is a chemical change. Why?

Answer 1

Chemical change: A permanent change in which the original substance loses its composition and properties and gives rise to one or more new substances with different compositions and properties.

• Example: The burning of a paper undergoes a combustion reaction.
• The burning of paper is considered a chemical change as the paper after burning changes into ashes and fumes of gases evolve.
• On burning paper the white paper changes into a black colour of ashes by evolving some gas es.

Therefore the burning of paper gives new substances with different compositions and properties, hence this a chemical change.