Science, Tech, Math › Science Salt Definition in Chemistry The Different Meanings of "Salt" Share Flipboard Email Print oksix / Getty Images Science Chemistry Chemical Laws Basics Molecules Periodic Table Projects & Experiments Scientific Method Biochemistry Physical Chemistry Medical Chemistry Chemistry In Everyday Life Famous Chemists Activities for Kids Abbreviations & Acronyms Biology Physics Geology Astronomy Weather & Climate By Anne Marie Helmenstine, Ph.D. Chemistry Expert Ph.D., Biomedical Sciences, University of Tennessee at Knoxville B.A., Physics and Mathematics, Hastings College Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels. our editorial process Facebook Facebook Twitter Twitter Anne Marie Helmenstine, Ph.D. Updated September 05, 2019 The word salt has different meanings in common usage and in chemistry. If you ask someone to pass the salt at dinner, this refers to table salt, which is sodium chloride or NaCl. In chemistry, sodium chloride is an example of a type of salt. A salt is an ionic compound produced by reacting an acid with a base or occurring as a natural mineral. In other words, a salt is produced by a neutralization reaction. Examples A salt is an ionic compound in which the cation is a metal and anion is a nonmetal or group of nonmetals. Specific examples include sodium chloride (NaCl), potassium chloride (KCl), and copper sulfate (CuSO4). Other salts are magnesium sulfate (Epsom salts), ammonium dichlorate, and sodium bicarbonate (baking soda).