Chemical Equation

Q. What is Chemical Equation?

Chemical Equation:

The symbolic or short hand method of describing a chemical reaction is called Chemical Equation. In a chemical equation the symbols of substances reacting with each other are written on the left hand side, they are called Reactants and the compounds which are formed due to their reaction are written on the right hand side, they are called Products. An arrow between reactants and products represent the process of chemical reaction. Mostly single head arrow is used in chemical equations to show the process of reaction but sometimes a double headed arrow is also used between reactants and products, it shows that the reaction is a reversible reaction the reactants can become product and products can become reactant using the same process.

Double-headed arrow

Single-headed arrow

Types of Chemical Reactions

Q. Explain types of Chemical Reactions with example:-

There are six general types of chemical reactions:

1. Combustion Reaction:

A Combustion reaction occurs when Oxygen reacts with any other compound to form Carbon Dioxide and water. It is a exothermic reaction which means heat energy is produced during this reaction.

Example: When methane gas (CH₄) reacts with oxygen (O₂) to produce one mole of water (H₂O) and one mole of carbon dioxide (CO₂)

CH₄ + O₂ =====> H₂O + CO₂

Chemical Reaction

Q. What is a Chemical Reaction?

A chemical reaction occurs when two or more molecules interact with each other. They form bonds and create a new molecule.

In a chemical reaction, the molecules that interact with each other are called reactants and the molecules produced by the reaction are called products. During a chemical reaction, no new atoms are created or destroyed. A reaction could include atoms, ions, compounds or molecules of a single element. The reactants contact each other, bonds between the atoms are destroyed and they rearrange to form new bonds and as a result products are created.