What are Chemical Changes?
A chemical change is one where there are changes in the chemical properties of the components. Their chemical composition may change and the final product may have different properties as compared to the original components.
Let us take the example of an apple. When you cut it and keep it in the open for some time, you will notice that it has a brownish hue on its surface. This happens because the acid in apple reacts with the atmospheric humidity and other trace elements present and gives the apple surface a brownish-yellow color.
Definition of Chemical Change:
A change which alters the specific properties of a substance by bringing about a change in its molecular composition, followed by a change in its state is called chemical change.