Unit Cell
A unit cell is the smallest repeating structural unit that defines the structure of a crystal lattice. When repeated in three dimensions, unit cells build up the entire crystal. Th…
Chemical Glossary — Letter U
5 chemicals found starting with "U"
Universal Indicator
A universal indicator is a mixture of several pH indicators that changes color progressively through the visible spectrum over a wide pH range (typically pH 1–14). By comparing the…
Unsaturated Hydrocarbons
Hydrocarbons containing one or more carbon-carbon multiple bonds (double or triple bonds). Alkenes contain at least one C=C double bond; alkynes contain at least one C≡C triple bon…
Unsaturated Solution
An unsaturated solution is a solution that contains less solute than the maximum amount that can dissolve at a given temperature and pressure — it can dissolve more solute. The sol…
Uranium
Uranium is a silvery-grey radioactive metal with atomic number 92, the heaviest naturally occurring element. It was discovered in 1789 by Martin Heinrich Klaproth. Uranium has thre…
About Chemicals Starting With U
This page lists all chemicals in our database beginning with the letter U. Each entry provides the chemical formula, CAS registry number, physical and chemical properties, common uses, and safety information. Use the alphabetical navigation above to browse other letters, or use the search function to find a specific chemical quickly.
Our chemical glossary covers acids, bases, salts, organic compounds, inorganic compounds, solvents, and many more categories. Click on any chemical name to view its full detailed profile.