The roof of the mouth or the palate can easily become disturbed. The mouth is a sensitive part of the body which frequently comes into contact with foreign substances which can cause a negative reaction in the body. The palate can become sore or it can develop a burning sensation.
Definition of Wac. : a member of a U.S. Army unit created for women during World War II and discontinued in the 1970s.
A VOC is a Volatile Organic Compound. The way a chemist uses that phrase, the word volatile describes a liquid that evaporates at room temperature, and the word organic means it is a compound that contains carbon.