Answer:
Create bonds 
Broken
Step-by-step explanation:
Energy is required to created bonds in a molecule and released when bonds are broken. 
Energy is needed in chemical reactions to do work. 
- During bond dissociation, energy is released as a by product.
 - In some cases, they energy is very useful for other processes. 
 - Also, when bonds are being formed, the attraction between chemical species stored up chemical energy.