K Capture
A type of radioactive decay in which an inner-shell electron (from the K shell, the innermost electron shell) is captured by the nucleus, combining with a proton to produce a neutr…
Chemical Glossary — Letter K
10 chemicals found starting with "K"
Kelvin
The Kelvin (K) is the SI base unit of thermodynamic temperature. Unlike Celsius and Fahrenheit, the Kelvin scale is an absolute temperature scale — it starts at absolute zero (0 K …
Ketene
Ketene is the simplest member of the ketene family — an organic compound with the formula CH₂=C=O containing a cumulated diene system (C=C=O). It is a colorless, toxic gas with a p…
Ketone
An organic compound containing a carbonyl group (C=O) bonded to two carbon atoms, with general formula RCOR'. Ketones are polar, can form hydrogen bonds with water, and are good so…
Kilogram
The SI base unit of mass, symbol kg. One kilogram is defined by fixing the Planck constant at exactly 6.626 × 10⁻³⁴ J·s. In chemistry, masses are often expressed in grams (g) or mi…
Kinetic Energy
Kinetic energy is the energy possessed by an object or particle by virtue of its motion, given by the equation KE = ½mv², where m is mass and v is velocity. In chemistry and thermo…
Kinetic Molecular Theory
A model that explains the behavior of gases by describing gas molecules as small particles in constant random motion with elastic collisions. The theory explains gas laws, temperat…
Kinetics
Chemical kinetics is the branch of chemistry that studies the rates of chemical reactions and the mechanisms by which they proceed. It examines how factors such as concentration, t…
Krypton
Krypton is a colourless, odourless noble gas, atomic number 36. Chemically inert under normal conditions. Used in lighting and as a standard of length. Named from the Greek kryptos…
Ksp
Ksp is the solubility product constant — the equilibrium constant for the dissolution of a sparingly soluble ionic compound. For a salt MₐXᵦ dissolving in water: MₐXᵦ(s) ⇌ aM^n+(aq…
About Chemicals Starting With K
This page lists all chemicals in our database beginning with the letter K. 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.