Science, Tech, Math › Science Compounds Made of Two Elements Share Flipboard Email Print Carbon dioxide, nitrous oxide, and methane are all compounds that consist of two elements. INDIGO MOLECULAR IMAGES, Getty Images Science Chemistry Basics Chemical Laws 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 June 04, 2019 A compound is a chemical substance made up of two or more elements. Here is a list of examples of compounds made up of exactly two elements. H2O - waterNaCl - sodium chloride or table saltKCl - potassium chlorideHCl - hydrochloric acidN2O - nitrous oxideAgI - silver iodideAlN - aluminum nitrideB4C - boron carbideCdTe - cadmium tellurideCsF - cesium fluoride Note: A compound that consists of two elements may contain more than two atoms!