Many of the reactions that occur when something decays are decomposition reactions. What clues show that this type of reaction is taking place? What happens during a decomposition reaction?"
a. A single compound breaks down into two or more elements or new compounds
b. The release of gas, formation of a precipitate, or a color change occurs
c. Energy in the form of light or heat is absorbed by the system
d. The reaction involves the exchange of electrons between two substances