Question

Does energy changes in chemical reaction ? Also write the correct reason.​

Answer 1

Yes, energy changes occur in a chemical reaction.

• In a chemical reaction, certain bonds might be breaking and other might be joining. The breaking and creation of chemical bonds require energy and hence energy changes occur in a chemical reaction.
• Energy is released into the atmosphere when in a chemical reaction , bonds are made. Such a process is an exothermic reaction.
• Energy is absorbed from the atmosphere when a bond is broken and such a process is an endothermic reaction.