Question

A piece of an apple when exposed to the atmosphere turns brown. This is an example of ______________.

• A. Physical change
• B. Chemical change
• C. Both (A) and (B)
• D. None of these

Answer 1

The correct option is B Chemical change

• A chemical change occurs as the result of a chemical reaction. In a chemical reaction, the molecules of one substance break apart and join together with those of another substance to create a different compound.
• The change of colour of the cut surface of the apple is because of the formation of new substances due to the chemical reactions that occur between air and the enzymes in the cut surface of the apple.