Question

Which of the following can be classified as a chemical change? * lighting of a matchstick melting of ice condensation of water separation of salt from water​

Answer 1

Answer:

lighting of a matchstick

Explanation:

as there will be a new substance formed

Answer 2

Lighting of a matchstick is a chemical change.

• The change in which formation of a new substance takes place is called a chemical change. Lighting of matchstick results in the formation of heat and oxygen due to chemical reactions. Hence, it is a chemical change and the process is irreversible.
• Melting of ice, condensation of water and separation of salt from water is a physical change as no new substance is formed and the process is reversible.