Question

What is a chemical reaction? Explain with an example.

Answer 1

A chemical reaction is the process by which reactants react with each other to yield products. In chemical reactions, the reactant molecules are completely different from the molecules of the products formed.
Example: Take some washing soda and mix it with water in a bottle. After making sure that the washing soda is fully dissolved in the water, add a few drops of lemon juice to the contents of the bottle. Hold a lit match stick near the mouth of the bottle. You will see that the match is extinguished showing that the gas produced is carbon dioxide.