Which statement describes the energy changes that occur as bonds are broken and formed during a chemical reaction? 1.Energy is absorbed when bonds are both broken and formed. 2.Energy is released when bonds are both broken and formed. 3.Energy is absorbed when bonds are broken, and energy is released when bonds are formed. 4.Energy is released when bonds are broken, and energy is absorbed when bonds are formed.

The statement which describes the energy changes that occur as bonds are broken and formed during a chemical reaction is: 3. Energy is absorbed when bonds are broken, and energy is released when bonds are formed.

A chemical bond can be defined as the forces of attraction that are existing between ions, crystals, atoms or molecules and they are mainly responsible for the formation of new chemical compounds.

In Chemistry, the amount of energy that is required to break one (1) mole of a particular chemical bond is referred to as bond energy. Also, bond energy is measured in kJ/mol.

Generally, chemical bonds are broken when energy is absorbed such as in an endothermic reaction while chemical bonds are formed when energy is released such as in an exothermic reaction.

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