physical science symbols Flashcards and Study Sets | Quizlet Hydrogen is a part of water, H2O. Helium is a very light gas that is used in balloons an Lithium is in batteries. Beryllium is used in windshields, non sparking tool Hydrogen is a part of water, H2O. Helium is a very light gas that is used in balloons an. Symbols, Terminology and Constants in Science - ChemTube3D Spectroscopy. Science and Mathematics uses a large range of units, symbols and terms, and initially it can seem like a foreign language. Here we have an inexhaustive list of commonly used mathematical terms and symbols that appear commonly in all sciences - especially physical and inorganic chemistry, spectroscopy and analytical chemistry.