Question

explain decomposition reaction ?in easy way for 5 marks​

Answer 1

Answer:

Decomposition is a type of chemical reaction. It is defined as the reaction in which a single compound splits into two or more simple substances under suitable conditions. It is just the opposite of the combination reaction.

In a combination reaction, a substance is formed as a result of chemical combination, while in a decomposition reaction, the substance breaks into new substances.

For example: The digestion of food in our body is accompanied by a number of decomposition reactions. The major constituents of our food such as carbohydrates, fats, proteins, etc.,decompose to form a number of simpler substances. These substances further react, releasing large amounts of energy, which keeps our body working.

Answer 2

• Decomposition is a type of chemical reaction.

• It is defined as the reaction in which a single compound splits into two or more simple substances under suitable conditions.

• It is just the opposite of the combination reaction.

• These reactions often involve an energy source such as heat, light, or electricity that breaks apart the bonds of compounds.

For example:

AB ----> A + B

Calcium carbonate, when decomposes, gives calcium oxide and carbon dioxide.