Answer:
The chemical reactions involves changes in energy due to the changes in the breaking and building of bonds.
Step-by-step explanation:
The changes in energy that chemical reactions involves are:
- Endothermic(absorbing) chemical reactions.
- Exothermic(releasing) chemical reactions.
Endothermic: The chemical reactions which absorbs the energy those chemical reactions are called endothermic chemical reactions.
Exothermic: The chemical reactions which releases the energy those chemical reactions are called exothermic chemical reactions.
The similarity in the reactions is both reactions are related to the change in energy. In one reaction the energy is absorbing and in another reaction the energy is releasing.