wiz-icon
MyQuestionIcon
MyQuestionIcon
8
You visited us 8 times! Enjoying our articles? Unlock Full Access!
Question

A chemical reaction involves the breaking up of chemical bonds between atoms resulting in the _______ and simultaneously the formation of bonds with the ________.


A

absorption of energy

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

release of energy

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

(1) A chemical reaction is in which the bonds are broken within reactant molecules, and new bonds are formed within product molecules in order to form a new substance.

(2) It is usually accompanied by a release of energy when a chemical bond is broken. Likewise, an input of energy is needed for the formation of chemical bonds.

(3) The supplied/released energy can come in different ways, such as heat, light, and electricity.

Endothermic reactions:

In general, endothermic reactions include the formation of chemical bonds by heat absorption from the surroundings.

Examples:

  • The melting of ice to form water.
  • The baking of bread.

Exothermic reactions:

The release of heat energy produced from bond breakage involves exothermic reactions.

Examples:

Generally referred to as burning, combustion is an exothermic reaction wherein when exposed to an oxidizing agent, a fuel undergoes reduction and becomes an oxidized substance.

Therefore, a chemical reaction involves the breaking up of chemical bonds between atoms resulting in the absorption of energy and simultaneously the formation of bonds with the release of energy.


flag
Suggest Corrections
thumbs-up
4
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Evolution or Absorption of Heat
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon