Chemical Reactions and Equations

What is common between the burning of a matchstick and rusting of an iron nail? In both cases, a new substance is formed. The burned matchstick turns to ashes and smoke, while the iron forms a red patch over it. This change is irreversible, meaning that none of the previous substance can be brought back to its original form. This is an example of chemical change. Humans are surrounded by examples of chemical reactions. To make things easy to understand Science makes use of chemical equations. Want to learn more? Watch our videos.