Science, Tech, Math › Science Normal Boiling Point Definition (Chemistry) Normal vs Regular Boiling Point Share Flipboard Email Print Normal boiling point is defined as the boiling point at sea level or 1 atmosphere. Kroeger & Gross / 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. Anne Marie Helmenstine, Ph.D. Facebook Twitter 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. Learn about our Editorial Process Updated on September 09, 2019 Normal Boiling Point Definition Normal boiling point is the temperature at which a liquid boils at 1 atmosphere of pressure. It's different from the simple definition of boiling point in that the pressure is defined. The normal boiling point is a more useful value when comparing different liquids, since boiling is affected by altitude and pressure. The normal boiling point of water is 100°C or 212°F. Cite this Article Format mla apa chicago Your Citation Helmenstine, Anne Marie, Ph.D. "Normal Boiling Point Definition (Chemistry)." ThoughtCo, Aug. 26, 2020, thoughtco.com/definition-of-normal-boiling-point-605416. Helmenstine, Anne Marie, Ph.D. (2020, August 26). Normal Boiling Point Definition (Chemistry). Retrieved from https://www.thoughtco.com/definition-of-normal-boiling-point-605416 Helmenstine, Anne Marie, Ph.D. "Normal Boiling Point Definition (Chemistry)." ThoughtCo. https://www.thoughtco.com/definition-of-normal-boiling-point-605416 (accessed June 10, 2023). copy citation Featured Video