By: Krystal Parker Jessica Cash Jessie Miller

Chemical reaction: the make or break of bonds between atoms Although the number of atoms stay the same, the order changes

Synthesis: when two or more molecules combine to make one larger molecule A + B → AB Energy is needed to make a synthesis reaction so it named an energy-absorbing reaction Exp.) when you get cut your skin cells synthesize to help you heal

Decomposition: when a molecule is broken down into smaller molecules AB → A + B Bonds are always broken, when they are broken energy is released Exp.) digestion of food

Exchange: involves both synthesis and decomposition AB + C → AC + B or AB + CD → AD + CB During this reaction a switch is made Different molecules are made Exp.) the body uses this type of reaction to energize reactions that involve ATP

Marieb, Elaine. “Patterns of Chemical Reactions” Essentials of Human Anatomy and Physiology. Editor: Serina Beauparlant. Eighth edition. San Francisco. Pearson Pages (37-39)