ESL teachers require a bachelor's degree as well as an ESL teaching certificate. In some states, ESL adult instructors need to gain certification. Typically, a high school diploma is required to work as an ESL private tutor.
Anion Definition: An ionic species having a negative charge. Anion Examples: free chloride in an aqueous table salt (NaCl) solution, singlet oxygen. Table of Common Anions. Return to the Chemistry Glossary Index. By Anne Marie Helmenstine, Ph.D.
IIRC anions are the ions that are attracted to the anode in an electrolytic cell. Opposite charges attract, hence the charge of an anion is opposite of that of an anode.